1 Day 1 ( pg 8 )( pg 93 ) Unit 2 Organic Chemistry Organic compounds: carbon is the principle element A functional group is any atom, group of atoms or organization of bonds that determines specific properties of an organic molecule The functional group generally is the most reactive part of a molecule and gives the molecule predictable characteristics o o o Solubility in polar and non-polar solvents Melting and boiling points Reactivity with other molecules There are three (3) main components (one or more of which make up a functional group) that determine the properties of an organic molecule: 1. Carbon-carbon _______________ bonds ethene propyne The second or third bond in a multiple bond is not as strong as the initial carbon-carbon single bond, therefore, multiple bonds are ______________ reactive Molecules containing multiple bonds are considered ______________ while molecules with only single bonds are considered ____________________________ 2. Single bonds between carbon and a more ______________________ element methanol chloromethane These bonds are ____________ increasing melting and boiling points (more attraction between the molecules) If the bond contains O-H or N-H, then ___________ bonding occurs between adjacent molecules and smaller molecules (less than 8 carbons) is soluble in water 3. ______________ bonded carbon and oxygen methanal This is a strong polar bond increasing melting & boiling points and solubility in polar solvents 2 2. Give the functional group for each of the following : alkanes _____________, alkenes _______________ alkynes __________________, alcohols ___________ aldehydes ________________, ethers ____________, carboxylic acids ______________, amides _________________, amines _______________ esters ________________ ketones ______________________,chloro _____, fluoro _____, iodo ________, bromo _________ 3. 4. Account for the fact that compounds containing OH and NH are soluble in water _________________________________________________________________ Review the nomenclature, properties and reactions of hydrocarbons Hydrocarbons are carbon compounds that contain only carbon and hydrogen atoms. Hydrocarbon Derivatives are carbon compounds in which any hydrogen atom has been replaced by another atom (ex. F, P, Br, Cl, N). Organic compounds generally share some common physical and chemical properties. Most carbon compounds are _________ electrolytes or are very ________electrolytes, and tend to have _________ melting points. Hydrocarbons are usually _________ (polar/non-polar), whereas hydrocarbon derivatives can be ___________ depending on what other atoms exist in the molecules. a. Alkanes( pg 11 ) Alkanes are the simplest group of aliphatics. They are ___________ hydrocarbons; they contain only single bonds with bond angles of ______________.The general formula for alkanes is __________ Memorizing the following list of alkanes is a crucial step in successfully naming organic compounds. 3 Number of Carbon atoms Chemical Formula 1 CH4 Schematic formula Structural formula 3D View Name Boiling Point (oC) methane -162 ethane -89 propane -42 butane 0 pentane 36 hexane 69 heptane 98 octane 126 H H C H H 2 C2H6 C3H8 3 C4H10 4 C5H12 5 C6H14 6 C7H16 7 C8H18 8 - H H H C C H H H H H H H C C C H H H H H H H H H C C C C H H H H H H H H H H H C C C C C H H H H H H H H H H H H H C C C C C C H H H H H H H H H H H H H H H C C C C C C C H H H H H H H H H H H H H H H H H C C C C C C C C H H H H H H H H H for 9 carbons the name is nonane , the formula is ________________________ for 10 carbons the name is decane, the formula is ___________________________ Review Naming Hydrocarbons ( pg 12 ) CH3 CH3 H3C CH3 1. Identify the longest chain, or main chain, of carbon atoms existing in the molecule. This will not necessarily be the most obvious horizontal chain, however in our example, it is the _______________ chain. 2. If you are dealing with a branched hydrocarbon, identify any sidechains or sidegroups. Here is a list of sidegroups you are responsible. You are given the name find out what their structure is ( pg. 13 ) methyl __________ ethyl isopropyl ________________________ _________ n – propyl ___________________________ butyl___________________________ 4 sec-butyl ________________________ tert-butyl_________________________ Note that the prefix iso counts alphabetically but not sec or tert 2. In our example, there are two methyl groups. 3. Identify the location of the sidegroups by numbering the carbons from one end to the other. In the example, the methyl groups appear on carbon numbers ____ and ____. It is important to understand that the molecule in the example is the same as CH3 CH3 CH3 H3C because the methyl groups are attached to the same carbon numbers. In the example, we began numbering from the left, in this case we begin numbering from the right. Always begin numbering at the end of the carbon chain that gives the lowest valued position for the sidegroup. If more than one of the same sidegroup appears, assign the appropriate prefix to show how many are present (ex. Di for 2, tri for 3, tetra, penta, and hexa). Prefixes are not considered for alphabetical order. 4. Separate numbers from other numbers with commas, and separate numbers from words with hyphens. Example 1: H3C CH3 H3C CH3 There are six carbon atoms in the longest chain. There are two methyl group branches on the ________ and _______- carbons. Thus, the name of this compound is ___________________________________ CH3 CH3 H3C Example 2: CH3 CH3 CH3 The main carbon chain consists of __________atoms; we are dealing with _________. There are three ________ sidechains and one _________ sidechain. Therefore, this molecule is called ; __________________________________________________________________ 5 Example 3: CH3 H3C C H CH3 The main carbon chain is ________________, so you may be tempted to call this molecule __________________. This is, however, not necessary because there is no other place for the methyl group to exist on the main chain without the molecule becoming butane. This particular molecule may be called ____________________or simply iso_______________ Example 4 Draw the structural formula for 2-fluoro- 3,4-dimethylpentane. 1. The main carbon chain is pentane H3C CH3 2. Methyl groups appear on carbons 3 and 4 CH3 H3C CH3 CH3 3. A fluorine atom appears on the 2nd carbon CH3 F H3C CH3 CH3 Name the following : 1. CH3 C3H7 CH3 \ / / C - C - C - C - C - C - C - C - ________________________________________________ \ CH3 2. ____________________________ 3. _________________________________________ 6 Condensed Formulas : - shortform representations of structural ; to name these first draw out the structural formula 1. CH3CH2CH(CH3)CH2CH2C(CH3)(C2H5)CH2CH3 CH3 / - C - C - C - C - C - C - C - C - __________________________________________________ \ \ CH3 C2H5 2. CH3(CH2)4CH(n-C3H7)CH2CH2CH3 - C - C - C - C - C - C - C - C - C - _____________________________________________________ C C C Properties(pg 22) Members of the alkane family share some distinct chemical and physical properties. Due to their non-polar nature, alkanes are _______in water. They generally have low boiling points, but boiling points ___________ as the number of carbon atoms in the molecule rises. This is due to the fact that when more carbon atoms are present, more hydrogen atoms are present. Recall that hydrogen atoms are bonded with carbon atoms covalently within organic compounds (intramolecular bonds). These hydrogen atoms are constantly forming momentary and induced dipoles as the electron each one shares with carbon moves closer to, or further away from it. These momentary dipoles help create intermolecular bonds (bonds between molecules). Therefore, more hydrogen atoms means more intermolecular bonds must be broken for boiling to occur, and more energy (heat) must be added to the system. Similar reasoning can be applied in determining the physical state of various carbon compounds at room temperature. Number of Carbon Physical State atoms in compound <4 Gas 5 – 16 Liquid >16 Waxy solid Define fractional distillation(22) _ __________________________________________________________________________ __________________________________________________________________________ __________________________________________________________________________ 7 THE FRACTIONAL DISTILLATION OF CRUDE OIL names of fractions C atoms boiling USES of the fraction in the range depends on its molecule in oC properties - methane gas fuel, C3-4 easily liquefied, portable energy source bottled gas for cooking (butane), higher pressure cylinders (propane) Fuel Gas, LPG, Refinery Gas 1 to 4 -160 to 20oC Gasoline, Petrol 5 to 11 easily vaporized, highly 20 to flammable, easily ignited, 60oC car fuel Naphtha 7 to 13 60 to 180oC no good as a fuel, but valuable source of organic molecules to make other things, cracked to make more petrol and alkenes less flammable than Paraffin, 120 to 10 to 16 petrol, domestic heater Kerosene 240oC fuel, jet fuel Diesel oil, 15 to 25 Gas oil 220 to 250oC Fuel and lubricating Oils and Waxes not so easily evaporated, not as flammable, safe to 250 store for central heating to oil, quite viscous o 350 C (sticky) and can also be used for lubricating oils, clear waxes and polishes Bitumen Asphalt 20 to 70 car and larger vehicle fuel forms a thick, black, tough and resistant adhesive on cooling, used over over 70 as waterproofing 350oC material and to sticks rock chips on roofs or road surfaces 8 Fractional Distillation, Cracking And Polymerization Find words in the grid and add them to the P O P O L Y P R O P E N E S N A V Y O D S E H M I I E text below. Each letter is used just O H L R O P E L A N O I T C A R F D F O I R E O R L T once. P P O L Y C H L O R O E T H E N E H S P U C T S W O P L C I Y N O I T A L L I T S I D R F U N U R T E D R Y O B G S L U B R I C A N T T A G O D B G T M A F E O E N I C H T A L K A N E S S I N C E L L A A N R T L T D T O T E Y A L K E N E S Y R I A L E E R L A A A R H E U L O R R S L E V E L L C K R C R G E N P C R E E N M U P H O T E S H I P S A R C B Y E A P I H T A L N S E M D R U G S N S G A B T A A O C W S M A T I P I E E N N P O I N T S E P V C A F R N E O E E H H O E O A L U M I N I U M O X I D E C T C S R T S T C A N S B Crude oil is a vital fossil fuel for modern life. It is a mixture of _ _ _ _ _ _ _ _ _ _ _ _, mostly alkanes, that is _ _ _ _ _ _ _ _ _ by an industrial process called _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _. To start with, liquid crude oil is fed into a _ _ _ _ _ _ where it is vaporized. The _ _ _ mixture of gases then passes into a fractionating _ _ _ _ _ _ and begins its journey upwards from the hottest region at the bottom towards the coolest region at the top. Hydrocarbons with similar boiling _ _ _ _ _ _ condense at different _ _ _ _ _ _ and flow into collecting trays. Each so called _ _ _ _ _ _ _ _ contains hydrocarbons of a similar size. For example, the petrol fraction condenses at a _ _ _ _ _ _ _ _ _ _ _ of about 40oC and contains hydrocarbons with five to ten carbon _ _ _ _ _. The lower the boiling point of a hydrocarbon, the _ _ _ _ _ _ up the fractionating _ _ _ _ _ it must go before it can _ _ _ _ _ _ _ _ and be tapped off. The _ _ _ _ _ _ _ fraction is tapped _ _ _ at the bottom of the fractionating column. This material is used in road building and as a protective roof covering. The _ _ _ fraction, used as a _ _ _ _ _ _ _ _ _ or as fuel for _ _ _ _ _ and central heating, condenses at the following level and next comes the diesel fraction, a source of fuel for lorries and _ _ _ _. Kerosene, used as _ _ _ _ _ _ _ _ fuel, is followed by the less well known fraction called _ _ _ _ _ _ _. This material plays a very important role in the manufacture of medicinal _ _ _ _ _ and other chemicals. After the naphtha comes _ _ _ _ _ _, that well known fuel for cars. Finally, the refinery _ _ _ _ _, including the camping stove fuels propane and butane, never condense but are simply collected for bottling at the _ _ _ of the tower. On the whole, smaller hydrocarbons are more useful and in greater demand than larger ones. Fortunately, an industrial process called _ _ _ _ _ _ _ _ can be used to turn long chain alkanes into short chain alkanes and equally useful _ _ _ _ _ _ _. In this _ _ _ _ _ _ _ decomposition reaction, vaporised _ _ _ _ _ _ _ are heated to temperatures of 400-700oC in the presence of a powdered _ _ _ _ _ _ _ _ _ _ _ _ _ _ catalyst. The alkenes produced by cracking can be made into polymers using addition polymerisation reactions. A _ _ _ _ _ _ _ _ and high pressure are used to make thousands of unsaturated alkene molecules rapidly join up to form long _ _ _ _ _ saturated molecules. During the process alkene carbon-carbon _ _ _ _ _ _ bonds break and _ _ _ _ _ _ bonds form. Addition polymers are commonly known as plastics. Examples are: _ _ _ _ _ _ _ _ _ _ (used to make carrier _ _ _ _, bottles, buckets and bowls); _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ (also called _ _ _ and used to make electric _ _ _ _ insulation, records and clothes); _ _ _ _ _ _ _ _ _ _ _ (used to make foam packaging and _ _ _ _ ); and _ _ _ _ _ _ _ _ _ _ _ (used to make crates, _ _ _ _ and carpets). One problem with plastics is that they are nonbiodegradable, but they are often _ _ _ _ _ _ _ _ nowadays even though the cost of sorting and reprocessing them is high. Complete page 10 (2-4) and 1,2 9 Day 2 : Reactions: pg 24 Alkanes are relatively unreactive due to strong _________ bonds, though reactions do occur at higher temperatures. i. Combustion: alkanes react with oxygen to form _________, __________, ____________and water. In complete combustion the products are ___________ and ____________. Consider the complete combustion of propane : C3H8 + 5O2 4H2O + 3CO2 In incomplete combustion the major products are _____or________ and __________________. Substitution: other atoms can replace hydrogen atoms in alkanes. Reaction below requires ________________________. ii. H H H C H + Cl2 H C H iii. Cl + HCl H CH4 + Cl2 CH3Cl + HCl methane + chlorine chloromethane + hydrogen chloride when heated to high temperatures in the absence of air, alkanes will break down into smaller molecules. Cracking : H H H C C H H H H H C C H + H2 H (1) butane ethane ethene.....or (2) butane methane propene lots and lots of other possibilities! e.g. (3) (4) C8H18 ===> C6H14 + C2H4 (making ethene) C12H26 ===> C9H20 + C3H6 (making propene) 10 Complete the following reactions and name the type of reaction ; write balanced equations : a) propane + Br2 b) ethane + I2 c) octane + O2 d) pentane + O2 e) CH3CH3 + heat Cycloalkanes (pg 11) - alkanes can also be found as cyclic structures or closed ring Try drawing cyclopropane below ; notice the bond angles are ____________; since the bond is strained cyclopropane would be ___________ reactive than propane Cyclic structure Cyclopropane Cyclobutane Cyclopentane Cyclohexane Structural formula 11 Draw methylcyclopropane If more than one side group is present use the same rules as you did for alkanes With 2 side groups it is possible to make geometric isomers. If the side groups are on the same plane ( cis ); if opposite planes then trans Draw : Rename if necessary a. 1,2-dimethyl-4-propylcyclobutane b. 1-ethyl-2-isopropyl-4-methylcyclohexane c. trans-1,3-dichlorocyclobutane d. 1-ethyl-4,5-dimethyl-2-bromocyclohexane e. 2-sec-butyl-3-isopropylcyclobutane Name the following : 1. __________________________________________ 2. _________________________________________________ 12 3. ___________________________________________ Draw the structural formulas for the following compounds: Note the prefix cyclo counts alphabetically. Rename if necessary 1. 3-ethyl-2-fluoro-4-methylhexane 2. 1,3-dimethyl-2-isopropyl-4-ethylcyclopentane 3. 2-ethyl-4-sec-butyl-6-propylnonane 4. 4-ethyl-4,5-dimethyl-2-propylheptane 5. 1-ethyl-2-methylcyclobutane 6. 3-cyclopropyl – 4 – tert-butyl – 3-iodocyclopentane 7. cis-1-ethyl-3-methylcyclopentane 13 8. 3-bromo-4-propylcyclopentane 9. 2-cyclopropyl-3-tert-butylcyclohexane 10. 1-isopropyl-4-methyl-3-ethylcyclobutane Complete pg 15 (1,2) 14 Name the following : CH3 CH3 1 CH3 H3C CH3 CH3 H3C C 2 H3C CH3 CH3 H H 3 C Cl Cl 4 CH3 5 6 7 _________________________________________ ________________________________________ 8 9 Cl F ________________________________________ 10 _________________________________________ 11 ______________________________________ ________________________________________ 15 Structural isomers - same ______________________ formula but different ________________ formula Draw and name all the isomers for pentane and octane. Research how isomers differ in physical and chemical properties referring to the octane isomers. Day 3 b. Alkenes( pg 16 ) Alkenes are the next family of hydrocarbons. They have similar structures to alkanes, however they are called _________________hydrocarbons because they contain a double bond (C=C); they are not saturated with hydrogen. The general formula is ______________________ H H C C H H C C H H C C CH3 H3C H CH3 H CH3 H H ethene or ethylene propene or propylene 1-butene 2-butene Members of the alkene family also have distinct chemical and physical properties. They have lower boiling points than their respective alkanes because there are less hydrogen atoms present to form intermolecular bonds. For naming alkenes the longest chain must contain the double bond and it is number to give the lowest possible # for the double bond. If 2 double bonds exist #’s are needed to indicate position e.g. 1,4-hexadiene. Draw ____________________________________ Draw : a. 3-ethyl-4-isopropyl—5-methyl-2-octene 16 b. 2-chloro-3-methyl-5-propylcyclohexene Geometric isomers - due to the restrictions of rotation about the double bond and the molecular geometry, there exists 2 different geometric structures to 2 - butene. The adjectives cis and trans are used to differentiate the isomers. Cis designates the isomer with the like groups or atoms on the same side of the alkene linkage while in trans the groups or atoms are on the opposite sides of the alkene linkage that is opposite planes. I. CH3 CH3 \ / C=C a. b. c. d. The The The The e. The structural formula for cis - 3 - hexene is : f. Draw trans - 3 - hexene g. Draw 5- ethyl - 5 - methyl - trans - 3 - heptene II. CH3 \ C=C \ CH3 cis isomer is represented by # ____________________________________ trans isomer is represented by # ___________________________________ name for # 1 is ______________________________ name for # 2 is ___________________________________ Reactions (pg 25) Combustion: Like alkanes, alkenes undergo oxidation, or react with oxygen, to release carbon dioxide and water. They will also undergo addition reactions. i) Hydrogenation: (hydrogenation is addition of hydrogen gas which breaks the double bond and an alkane is formed ( requires a catalyst (Pt), heat and pressure H H C H H2 H ethene ii) + C + hydrogen H H H C C H H H __________________ Halogenation: halogenation is the addition of a halogen (F, Cl, Br, I) to break the double bond and create a hydrocarbon derivative ; reaction at _________________ temperature 17 H H C C H + Br2 H H ethene + bromine Br Br C C H H H ___________________________ State Markovnikov’s Rule ( pg 26 ) _______________________________________________________________________________ _______________________________________________________________________________ iii) Hydration is the addition of ________________, which breaks the double bond and creates an ____________________( _________________ is the catalyst) H OH H H C C H + H2O H ethene + water H C C H H H ______________ (ethanol) Complete : Propene + water ________________________________ iv) e.g. Hydrohalogenation : addition of a hydrogen halide to a double bonded alkene propene + HBr Complete pg 27 ( 1-3 ) ----------- ____________________________________ 18 Write the IUPAC name for each of the following: a) b) F c) d) e) f) Cl Br C. Alkynes Alkynes are the final family of aliphatics. Like alkenes, they are unsaturated; they contain a triple bond between carbons. Their general formula is _________________ HC CH ethyne or acetylene HC CH3 CH3 propyne HC 1-butyne Name the organic below : ______________________________________________ 19 Reactions Alkynes undergo the same type of combustion and addition reactions as alkenes. 1. Predict how the boiling point of alkynes compares to those of alkenes and alkanes. ____________ 2. Account for this trend. __________________________________________________ 3. Name where possible and classify each of the following as alkanes, alkenes, or alkynes. a) C4H6 b) C5H8 H3C H2C CH3 e) 4. f) c) C6H12 CH3 g) HC d) C3H4 CH3 h) CH3CH2CH3 Complete the following reactions and name the reactants, products and the type of reaction: a) CH3CH2CH3 + Br2 b) CH3CH=CH2 + I2 c) CH3CCCH2CH3 + 2Cl2 d) CH3CH=CH2 + H2O e). CH3CH2CH3 + heat f) CH3CCCH2CH3 + H2O g) CH3CH=CH2 + O2 20 Complete pg 37 ( 6 a-f ) 1 Day 4 CFC's and Ozone Depletion ( pg 34 ) Chlorofluorocarbons (CFCs) Chlorofluorocarbons (CFCs) are compounds containing carbon, chlorine and fluorine. Chlorofluorocarbons (CFCs) are sold under the trade name of ________________. Used as working fluids in refrigerators and air conditioners because they are gases at room temperature wich can be easily liquified by compression and because they are stable and non-toxic Used as foaming agents in the production of polystyrene and polyurethane foam plastics used for insulation and packing materials Used as a propellant in spray cans for paint, insect repellants, deodorants 21 Name Formula Code Uses trichlorofluoromethane freon-11 CCl3F CFC-11 refigeration, aerosols, foams dichlorofluoromethane freon-12 CCl2F2 CFC-12 refigeration, aerosols, foams, air conditioning 1,1,2-trichloro-1,2,2-trifluoroethane freon-13 CCl2FCClF2 CFC-13 electronics, dry cleaning, fire extinguishers 1,2-dichloro-1,1,2,2-tetrafluoroethane CClF2CClF2 CFC-14 freon-14 1,2,2-trichloro-1,1,2-trifluoroethane freon-113 aerosols CClF2CCl2F CFC-113 degreasing and cleaning printed circuit boards Chemistry of Ozone Depletion by CFCs ; watch video www.teachersdomain.org Ozone Hole CFCs destroy the ozone in the stratosphere (15 - 20 km above the earth's surface) (Ozone concentrations are measure in Dobsen units, 1 Dobsen unit represents 1 molecule of O 3 for every 1 billion air molecules) Ozone loss is greatest over _____________ where the ozone depletion has been recorded and is commonly referred to as the "ozone hole". Ozone (O3), an allotrope of oxygen, is poisonous to humans if breathed in, but is important to life in that it filters out or absorbs short wavelength ultraviolet radiation (u.v) in the 280 - 320nm range which can cause serious sunburn, skin cancer and eye disorders. The inertness and lack of water solubilty of CFCs mean they are not destroyed nor are they dissolved in rain water so they stay in the atmosphere for a very long time and diffuse up to the stratosphere In the stratosphere, CFCs come into contact with short wavelength ultraviolet radiation which is able to split off chlorine atoms from the CFC molecules CCl2F(g) u.v radiation ---------------> CCl2F(g) + Cl(g) These chlorine atoms destroy the ozone layer Cl(g) + O3(g) -------------> ClO(g) + O2(g) There are significant numbers of oxygen atoms in the stratosphere (since ozone undergoes a natural photochemical decomposition producing oxygen atoms and molecules) which leads to the regeneration of chlorine atoms in the stratosphere. So, 1 CFC molecule can destroy many ozone molecules. ClO(g) + O(g) -------------> O2(g) + Cl(g) Substitutes for CFCs (pg 34) The only long term solution to solve the problem of depletion of the ozone layer is to phase out the use of CFCs (Montreal Protocol of 1987 and subsequent modifications) Some CFCs can be replaced by HCFCs (hydrochlorofluorocarbons), compounds containing at least 1 H atom. Most common used today is __________________________ The C-H bond makes these compounds more reactive in the atmosphere so they are destroyed more quickly and so are less able to diffuse into the stratosphere 22 Name Formula Code Uses chlorodifluoromethane CHClF2 HCFC-22 air conditioning, refrigeration, foams 1-chloro-1,1-difluoroethane CClF2CH3 HCFC-142b aerosols 1,1-difluoroethane CHF2CH3 HCFC-152a aerosols, refrigeration Hydrocarbon Classification Aromatic Compounds ( pg 19 ) Aromatic compounds are those that contain, or are derived from the __________molecule. __________ is unique in that its chemical formula is C6H6 yet it contains no _____ or ________ bonds. Rather, benzene’s bonds are formed by delocalized electrons, which are not fixed to any one atomthey resonate throughout benzene’s ring structure. All bonds in benzene are considered __________________. H H H H H H H H H H H H The symbol for benzene 3D representation Physically, benzene is a flat molecule. It has a ___________boiling point than corresponding cycloalkane, alkane, alkene and alkyne because hydrogen atoms from one molecule are able to get closer to the hydrogens from other molecules. This allows for stronger intermolecular attraction. Also, benzene is _____________, it is ____________in water. Distinguish between the prefixes ortho, meta and para ( see pg 20 ) ____________________________________________ 23 See rules for naming aromatic hydrocarbons ( pg 21 ). For one alkyl group no number is needed to identify the sidegroup e.g. methyl benzene. If more than one sidegroup numbers are needed. Draw 1-ethyl-3-methyl benzene Sometimes benzene may be considered a sidegroup and is given the name ________________ Complete pg 21 ( 7,8 ) Reactions Due to its cyclic structure, benzene is very stable. It will only undergo ________________reactions. H H H H H + Cl2 + chlorine H Cl H H H benzene - H + HCl + hydrogenchloride H chlorobenzene the catalyst for the above reaction is iron(III) bromide also undergo nitration reactions ( nitrogen dioxide is added in the presence of the catalyst ) In some cases, such as when benzene forms a compound with ethylene, or any other alkene, alkyne or even a long chained alkane, the benzene part of the compound may be called the phenyl group: CH2 phenylethene 24 Draw the structural formula for i. 1,2,3-trimethylbenzene ii. 2-phenyl-4-isopropylpentane iii. toluene iv. phenol v. orthodibromobenzene vi. paradiflourobenzene vii. metadibromobenzene viii. 1,3,5-trimethylbenzene ix. Complete the following reactions. Draw the structural formulas and balanced equations. a) benzene + Br2 b) benzene + O2 c) phenylethene + Cl2 Complete page 22 (2b,f,h,j,k,l) 3,4), page 31 (2,3a-d,4), page 37(2,3). È 25 1. Write the IUPAC name for each of the following a) Cl b) Br F c) d) e) f) Cl 2. Draw appropriate line structures for each of the following: a) meta-dibromobenzene b) 3,6,7-triphenyldecane Physical & Chemical Properties of Aromatic Hydrocarbons ( pg 29 ) - aromatic compounds are __________reactive as the aliphatic compounds due to the extra strength associated with the delocalizing e's in the aromatic ring do not readily participate in ________________ rxns because of this stability however, aromatic compounds do undergo _____________rxns in which one or more hydrogen atoms from the ring are replaced by another group used as a good ______________ solvent 26 Practice naming and drawing hydrocarbons. 27 1. Draw structural diagrams for the following hydrocarbons. Rename if necessary (a) 2-ethyl-3-phenylheptane (b) (c) 4-ethyl-5-isopropyl-2-hexyne (d) 3-ethyl-2-methyl-4-propylbenzene 2-ethyl-3-cyclopropylcycloheptene (e) 1-sec-butyl-2,4-diethylcyclohexane 2.Draw line structural diagrams for the following hydrocarbons. (a) 3-ethyl- 4- methylcyclopentane (b) 2,3,4,5-tetramethylhexane (c) 1-isopropyl-2-sec-butylcyclohexane (d) 2,6,7-triethyl-4-methyl-3-heptene (e) 3-methyl-2,4-dipropylbenzene 3. Name the following hydrocarbons. (a)CH3CH2CH═CHCH2CH2CH3 _________________________________________ (b) (c) _____________________________________________ 28 Nomenclature Review Sheet H H H H H H H C C C C C C H CH3 H CH3 H H H H __________________________________________ H H H H H C C C C C H CH2 H H C H CH3 H H H ________________________________ CH3 CH3 CH CH2 CH CH3 CH2 CH3 CH CH3 CH3 C CH3 CH2 C CH3 CH3 CH3 CH3 _______________________________ ________________________________ CH3 CH2 CH3 CH3 CH2 CH3 ________________________________ H H H H C C C H H ‗ H H C C C H H H ______________________________ H H H H C C ‗ H H H C C C H H H H ______________________________________ __________________________________ CH2 H H C H ‗ H ‗ C CH2 CH2 CH2 CH2 H CH2 C C C H CH3 H H ________________________________ ______________________________________ CH3 29 CH2 ______________________ CH3 CH ‗ __________________ ________________________ CH3 CH CH CH CH CH3 CH3 CH2 CH3 CH2 CH3 _________________________________ CH ≡ C CH3 CH CH2 CH2 CH2 CH2 CH2 CH2 CH2 CH3 _____________________________________ CH2 CH3 CH3 CH C ≡ C CH3 __________________________________ CH3 CH CH CH3 CH2 ________________________________ CH3 1. Draw the correct Structural formula for each of the following: (a) (d) Benzene 1,2 – dimethylbenzene (b) Cyclopentane (e) (c) 3-ethylcyclobutene Cyclopentene (f) 1,4 – diphenylbutane 2. Write the correct IUPAC name for each of the following: (a) (b) CH3 CH2CH3 CH3 – CH2 – CH – CH2 – CH – CH3 | CH2 | CH3 CH3 30 Day 5 : Building organic molecules Day 6 Hydrocarbon Derivatives Functional Groups Now that we have finished our look at hydrocarbons, we move on to hydrocarbon derivatives. Adding other atoms to hydrocarbons generally forms these. Examples of such derivatives are alcohols, esters, carboxylic acids and alkyl halides. Functional groups are the sites at which most chemical reactions occur. They are generally polar and will react with other polar or ionic reactants, however the double and triple bonds in alkenes and alkanes can also be considered functional groups. Organic compounds with the same functional groups will behave similarly in chemical reactions. Some of the most common functional groups, their general structures and examples are listed in the following table. General Structure R O Group Name Functional group name Example Structure H3C alcohol O H methanol H H3C R—O—R’ R Example Name O O H CH3 ethoxyethane O carbonyl methanal H H R H3C O O 2-butanone R1 CH3 O O R ethanoic acid (acetic acid) H3C OH O OH O ethyl acetate R O R1 H3C O CH3 H R NH2 amino H C H H methylamine N H Note: R and R1 symbolize a general hydrocarbon group. They may be the same or different. Amides are missing from the table the functional group is ______________________ a. Alcohols (pg 38 ) Alcohols are molecules with the _______________ functional group (______________). Due to their ____________ nature, alcohols are completely miscible (dissolvable) in water. They have relatively ___________ boiling points, due to ___________________________ Alcohols are named by replacing the –e on the corresponding alkane with –ol. The C attached to the OH must have the lowest # possible. 31 Methanol is wood alcohol used in windshield washer anti-freeze, ethanol is grain alcohol found in alcoholic beverages,2-propanol or isopropanol is rubbing alcohol and 1,2-ethanediol is ethylene glycol found in car anti-freeze. Name some other important alcohols (good and bad) ________________________________________ H3C H3C O O H3C H CH2 1-propanol methanol OH HO 1,2-ethanediol O H H3C H 2-propanol In naming cyclic alcohols the OH is considered position # 1 thus no number is needed in the name . try drawing 2,3-dimethylcyclohexanol Complete page 41 (1-3) Classification of alcohols : Type of alcohols A primary alcohol is one in which the hydroxide group is attached to a carbon that is bonded to one other carbon atom. A secondary alcohol is one in which the hydroxide group is attached to a carbon that is bonded to two other carbon atoms. A tertiary alcohol is one in which the hydroxide group is attached to a carbon that is bonded to three other carbon atoms. Example OH H3C 1-propanol HO CH3 H3C 2-propanol CH3 H3C C CH3 OH 2-methyl-2-propanol Draw and name the first degree, second degree and tertiary alcohols of butanol. b. Draw the following molecules . Rename if necessary. Classify the type of alcohol where possible. 1. 2 - pentanol 2. 5 – ethyl-2-methyl - 3 - hexanol 32 3. 3 - ethyl-5-propyl-2- methyl -3 - hexanol 4. 2,3 – dimethyl-4-tert-butylcyclohexanol 5. 1,2 - ethanediol ( ethylene gycol ) ( anti-freeze ) 6. 1,2,3 - propanetriol ( glycerol ) 7. 3 - bromo - 2,3 - diethyl - 2 - butanol 8. 3-chloro-2-cyclopentenol 9. 2,3 - dimethyl - 2 - cyclobutenol 10. 3,4-dimethylcyclohexanol 11. 6-ethyl-2-heptanol 12. 1,3 - pentanediol 13. trans-2-chlorocyclopentanol 14. 4-methyl-3-penten-2-ol 15. trans-cyclobutane-1,2-diol 33 Name the following: 1. __________________________________________________ 2. ___________________________________________________ 3. ________________________________________________ 4. _______________________________________________________ 5. ___________________________________________________ Day 7 : Properties (pg 42) 1. 2. 3. 4. 5. 6. 7. 8. Clean burning fuels i.e. methanol and ethanol Alcohols are prepared by adding _____________ to _________________. Reaction is called ___________ Methanol is prepared by adding ___________ to ________________ Primary alcohols can be oxidized to aldehydes then to carboxylic aicids Secondary alcohols can be oxidized to ketones Alcohols can be dehydrated forming _____________________ ; _______________ reactions B.P. are due to . As the size of the molecule increases the B.P. _____ ____________ in water ; as the # of carbons increases the solubility __________________ 34 , alcohol in cough syrups windshield washer 9. 1. Some common alcohols are : anti-freeze and skin lotions ;rubbing alcohol _________________ Preparation and Reactions (42-43) Alcohols can be prepared by the addition of water ( ________________ reaction ): H H H C + C H -------------- H2O H H ethene + Sulfuric acid (catalyst) water H O C C H H H ethanol How was methanol originally obtained ? __________________________________________________ What is the modern method of preparing methanol ? ________________________________________ 2. Combustion : the same as for alkanes 3. Mild Oxidation of a primary alcohol first yields an _____________________ (pg52) oxidation refers to either loss of ___________, loss of ______________ or gain of __________________ Remember LEO the lion says GER OH H3C K2Cr2O7 O H3C potassium dichromate (oxidizing agent) 1-propanol propanal + H2O + water and with further oxidation, a carboxylic acid... O O H3C K2Cr2O7 H3C C OH propanal potassium dichromate propanoic acid Oxidation of a secondary alcohol yields a ketone, and tertiary alcohols can not be oxidized easily since _____________________________________________ O OH + K2Cr2O7 H3C CH3 2-propanol H3C potassium dichromate H2O CH3 propanone water 35 - 3. Elimination reactions ( __________________ )( pg 43 ) alcohols when treated with sulphuric acid produce ________________________________ 4. Substitution Reactions alcohols react with strong acids like HCl. The OH is removed and exchanged for a Cl. 2-methyl-2-butanol i. + HCl ------ ______________________ + ____________________ Complete the following reactions and name the reactants and products: a) CH3CH2CH2OH + oxidizing agent b) CH3CHOHCH3 + oxidizing agent c) CH3CH2CH2CH2CH2OH + oxidizing agent d) CH3CH2C(CH3)(OH)CH2CH3 + oxidizing agent e) CH3CH=CH2OH+ O2 f) 3-methyl-2-hexanol + HCl ----------- Complete pg. 44(7,8) Research : What are the advantages and disadvantages of methanol as a fuel, over more conventional gasoline or diesel fuels ? _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ Day 8 : Lab : Oxidation of alcohols : Demo pg 85 36 1.NAMING ALCOHOLS FORMULA TYPE NAME CH3 – CH2 – CH2 – OH 2 – butanol CH3 | CH3 – C – CH2 – CH3 | OH ethanol CH3 – CH – CH – CH3 | | OH OH OH | CH2 – CH – CH – CH3 | | OH OH OH OH OH 2.Write the IUPAC name for each of the following a) OH OH b) OH 37 c) d) OH OH OH e) f) F OH Cl OH OH Day 9 Ethers (pg 45) An oxygen atom bonded between two carbon atoms characterizes ethers. To name ethers, the longer of the two alkyl groups is selected as the main chain. It is left as it would appear as an alkane, etc. Remove the –yl ending that would normally apply to the shorter of the two groups, and add –oxy. O H3C CH2 CH3 methoxyethane - the traditional name for the above is ethylmethylether 1. Write the structural formula for an ether with the formula: C4H10O ii. What other isomers can you make and name? Draw the following : 1. 1-ethoxypropane 2. 3-ethyl-2 - propoxypentane 3. 1,2 - dimethoxyethane 38 4. 2 - chlorobutyl - 2,2 - dimethylpentyl ether 5. cyclobutoxycyclopentane 6. 1,3 - dichloro - 2 - methoxypropane Complete pg 46(11) Name the following : 1. ________________________________________________ 2. _________________________________________________ Properties : 1. Boiling points are _____________ than corresponding alkane but _______________ than corresponding alcohol 2. Considered a ________________ molecule due to _____________________; very good solvent for both polar and non-polar molecules . 3. Highly __________________________; diethyl ether was used as a ____________________________but now has been replaced by _______________(pg 48) 4. What is the common use of diethylether nowadays ? ______________________________ 39 Preparation : ethers can be formed through an elimination reaction __________________________________ alcohol + alcohol ------------ _____________________ + __________________________ catalyst for the above reaction is ______________________ - Complete pg 48 (2,3,4,6a,b,c,7) 1.Complete the following : CH3 – CH2 – CH2 – O – CH3 2- ethoxy – 3 – methyl pentane CH3CH2 – O – CH2CH2CHCH3 | CH3 2. Write the IUPAC name for each of the following a) b) O O O O O c) d) O O O OH O 40 e) f) O O O O Day 10 Aldehydes and Ketones (pg 49 ) Aldehydes and ketones are similar in that they both contain a carbon atom that is double bonded to an oxygen atom. The difference is that in an aldehyde, this carbon atom is attached to a hydrogen atom, whereas in a ketone, it is bonded between two other carbon atoms. R O H aldehyde R O R1 ketone Here R and R1 would be carbon groups and not Hydrogen atoms Both have relatively _____________ boiling points and are _______________ in water because the carbonyl group is quite polar. In naming aldehydes and ketones, locate the carbonyl carbon atom that contains the base name. For aldehydes, remove the –e ending from the base name and replace it with –al. For ketones, remove the –e and replace it with –one. It is important, when naming ketones, to use the number of the carbon to tell exactly where the carbonyl group occurs. CH3 O C CH3 H3C ____________________________________________________ x. Write and name a structural formula for this aldehyde: C 3H6O xi. Write and name the structural formula for the ketone with the same chemical formula. Common aldehydes and ketones : 1. formaldehyde IUPAC name is ______________; used as a __________________________ 2. acetone IUPAC name is _____________________; found in _________________________ Name the following : 1. -C-C-H O 41 2. -C-C-C-C-H / CH3 O 3. C-C-C-C-C-C-C–H / \ \ CH3 CH3 CH3 O 4. _________________________________________________________ Draw the following : 1. methylpropanal 2. 3-ethyl-4-methyl - 2 - pentenal 3. 2,3 - dibromo - 4,6,7 - trichlorodecanal 4. 3 – bromo-3-cyclopropyl- 2,2 - dichlorobutanal Name the following : 1. C-C-C-C-C \ CH3 O CH3 2. -C-C-C-C-C O CH3 C2H5 3. ___________________________________ 42 4. ______________________________________ Draw the following : Rename if necessary 1. 2 –ethyl-4-methyl - 3 - pentanone 2. 3 - cyclopropyl - 4 - methyl - 2 - pentanone 3. 5,7 - diethyl - 2,3,5 - trimethyl - 4 - nonanone 4. 2,4,4 - trimethyl - 3- heptanone 43 Independent Research Name ____________________________ 1. Assess the impact on human health, society and the environment of organic compounds in everyday life(e.g. polymers, nutritional supplements, food additives, pharmaceuticals and pesticides. Consider the following issue regarding the use of organic solvents which can dissolve substances such as paint , oil and grease. They are also used to produce plastics, dyes, detergents, textiles and pharmaceuticals . In a risk benefit analysis we must also consider the workers exposed to organic solvents may experience long-term effects on their health. We must also consider industrial spills and leaks which can leach into the soil and ground water posing serious health and environmental risks. Answer the following questions ; a. What methods should be used to safely dispose of volatile organic compounds. ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ b. What WHMIS symbols or HHWS should appear on containers of pesticides. ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ c. Why are organic compounds added to food products and what impact can these additives have on human health. ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ 44 2. Propose a personal course of action to reduce the use of compounds that are harmful to human health and the environment ( e.g. weed lawns by hand rather than using herbicides, use cloth bags for shopping to reduce the number of plastic bags in landfill sites, choose fuel-efficient or hybrid vehicles to reduce fossil fuel emissions. Consider the following ; many communities have banned the use of pesticides and as a consequence many homeowners are seeking alternative ways to control weeds. Questions to consider : a. How long does it take for plastic garbage bags to decompose in a landfill site. ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ __________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ b. What biodegrable materials can be used to replace polystyrene as a packaging material. ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ __________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ c. What are some technologies and features that are making new cars more fuel-efficient. ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ __________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ d. Watch video www.teachersdomain.org : Carbon-Fiber Car of the Future What are the environmental effects of so many cars on the roads, as seen in the beginning of the video? Brainstorm ways to address some of these issues. ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ __________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ 45 From 1987 to 2007, the average fuel efficiency of all cars on the road actually decreased from 22.0 mpg to 20.2 mpg. Explain why this decrease occurred, even though engines today are more efficient. ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ __________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ List at least three ways you can think of to increase the efficiency of cars. Are there steps an ordinary person can take to make this happen? ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ __________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ Describe carbon fiber. What are the pros and cons of using it to make cars? ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ __________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ What environmental impact would this technology have on our lives if it were available today? How would the production of this prototype impact car manufacturing? What other options are presently available to reduce the problems presented in the video? ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ __________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________________________________ Consider the following list of organic compounds with known safety, health, and environmental concerns, (e.g., ether, carbon tetrachloride, PCB, CFC, leaded gas, saccharin, olestra, and formaldehyde) that students can choose from, or allow the students to research an organic compound of their choice. In the database activity, students produce a database on the product, its use, known safety/health/environmental concerns regarding this product, alternate products used in response to these concerns, and the reason for the use of alternates (Why is it better?) in table format as suggested below: Product Uses Concerns Due Alternate Reason for Use (Organic to Uses of Product of Alternate Compound) Product Product Complete pg 51-52 (1,3,4 ) 46 Worksheet: Aldehydes 1. Write the IUPAC name for each of the following a) b) O O c) d) OH O OH Organic Worksheet Name ________________________ 1. Give the structural formula for the following compounds. The hydoxy group is OH. Rename if necessary. a) b) 2-chloro-4-propyl-3-methylpentanal 4-cyclopropyl-2,3-dimethylcyclopentanone c) 3,4-dihydroxy-2-methylpentanal d) 2-hydroxy-3-methylbutanal e) 5-t-butyl-4-hydroxy-3-hexanone 47 3. Name the following compounds with names suitable to the IUPAC nomenclature rules. Mix and Match. O a. H3C CH2 CH3 _______________________________ b. ___________________________________________________________ c. ____________________________________________________ d. _______________________________________________ e. _______________________________________________ 48 ALDEHYDES Name the compounds shown below: CH3 – CH2 – C = 0 | H ________________________________ CH3 – CH2 – CH – CH2 – C = 0 | | CH3 H __________________________ CH2 – CH2 – CH2 –CH2 – C= 0 | | | CH2 – CH3 CH3 H Draw the structural formula for the following: 1. methanal 2. 2 – chloropropanal 3. 2 – bromo – 4,4 – dimethylpentanal 4. 2,2 – difloro – 3,3,4 – trichlorobutanal __________________________ Br O | || CH3 – C – CH2 –CH2 – C – H | Cl __________________________ KETONES Name the compounds shown below: O || CH3 – CH2 – C – CH3 Draw the structural formula for the following: 1. propanone 2. 2 – pentanone 3. 3,4 – dimethyl – 2 – hexanone 4. 4 – bromo – 2,2 – dimethyl – 3 – pentanone Name:___________________________ CH3 – CH2 – C – CH2 – CH3 || O Name :__________________________ CH2 – CH2 – CO – CH2 – CH3 | | CH3 Br Name : __________________________ Br O | || CH3 – C – CH2 – C – CH3 | Cl Name : __________________________ 49 Day 11 : Preparation : - see section on alcohols Properties : aldehydes generally have a strong pungent smell; ketones smell sweet e.g. smell of a rose is due to ketones ; aldehydes of higher molecular masses have pleasant smells e.g. smell of cinnamon. Both are used to make perfumes. Both are _________ in nature thus _________ in water. They are also used to dissolve non-polar solutes. Boiling points are high as far as organics go but much less than ________________ Name the following ketones : male sex hormone _________________; female sex hormone ____________________; anti-inflammatory _______________________________ Oil found in almonds ____________________________ Reactions : 1. Addition ( hydrogenation )(Reduction) Ethanal + hydrogen ---------------- ______________________________ Propanone + hydrogen ------------- ________________________________ Complete pg 56 ( 6,7 ); pg 57 ( 3,4 ) Carboxylic Acids (pg 58) Carboxylic acids contain both the carbonyl group, and the hydroxyl group. Together these make up the __________ group. O C OH They have _____________ melting and boiling points because there is _____________ bonding present In naming carboxylic acids, replace the –e ending of the corresponding alkane with –oic acid. If sidechains are present, begin numbering the carbon atoms with the end that holds the carboxyl group, or assign the smallest number to this group. 50 O H3C i. OH ______________ acid Draw and name the structural formula for the following carboxylic acid: C2H3OOH. - methanoic acid is the IUPAC name for ____________________________ - ethanoic acid is the IUPAC name for ______________________________ Name the following : 1. C - C - C - C - COOH 2. C - C - C - C - C – COOH / \ CH3 C2H5 3. 4. ________________________________ _____________________________________ C - C - C - COOH / \ \ CH3 Cl Cl _________ CH3C(Cl)(Br)COOH 5. _________________ _____________________________________ Draw the following : 1. trifluoroethanoic acid 2. 3-chloro-4-isopropy-5-methyllbenzoic acid 3. 4,4,5-triodo-2-methylhexanoic acid 4. 3,4-dibromo-2,5,7-trichlorodecanoic acid Name the common acid found in : vinegar , rancid butter _______________ fruits ____________________________ rhubarb : ethanedioic acid : draw structure bee stings . 51 Properties (60) 1. 2. 3. 4. Relatively boiling points as far as organics go due to _________ ; ________ than alcohols Simple ones are in water ( the first four ) Characteristic unpleasant odour Turn litmus paper ; when ionized in water produces the ____________________ion. Complete pg 60 (1,2) Preparation : - - ______________ of primary alcohols produces _______________ which can be further _____________ to ____________ Complete pg 63 (5,7,8) 52 CARBOXYLIC ACIDS Name the compounds shown below: Draw the structural formula for the following: 1. Ethanoic acid CH3 – CH2 – CH2 – C = 0 | OH Name : ________________________ CH3 – CH – CH2 – CH2 – COOH | CH3 2. 3 – ethylpentanoic acid 3. 3,3 – dibromopropanoic acid 4. 2,2,4,4 – tetramethylhexanoic acid Name : _________________________ Br O | || CH3 – C – CH2 –CH2 – C – OH | Br Name : _________________________ F O | || F – C – CH2 – CH – C – OH | | F CH3 Name : _________________________ Day 12 E. Esters ( pg 64 ) One of the most important reactions carboxylic acids undergo is esterification. In this reaction, an alcohol reacts with a carboxylic acid to form an ester and water. O O + H3C OH + HO CH3 H3C O CH3 H2O ethanol ethanoic acid ethyl ethanoate water Esters consist of two hydrocarbon groups separated by the ester functional group. This group consists of one oxygen atom doubly bonded to a carbon atom and another oxygen singly bonded between the same carbon atom and the next hydrocarbon chain. In forming esters _______________ is removed from the alcohol and ________________ is removed from the acid. See page 64-65 Esters have lower boiling and melting points than alcohols or carboxylic acids because they cannot form hydrogen bonds. In naming use the alkyl portion of the alcohol name as the first name. The - ic acid ending of the name of the carboxylic acid is replaced with - ate . Consider the example below. 53 O H3C C O CH3 propyl ethanoate ( note 2 separate words ) a. Write and name the structural formula for the following ester: C 2H5OOCH Name the flavour _______________ b. Write the reaction for methanol and butanoic acid. Name the product. What flavour. c. Write the reaction for methanol and ethanoic acid. Name the product. d. Write the reaction for: Name the reactants and products. O H3C CH3 OH HO e. Name the two chemicals that react to form the following: State the flavour of each. Note common names are used. a) isobutyl propionate b) methyl butyrate c) ethyl butanoate d) 3-methyl butylacetate e) octyl ethanoate f) pentyl butyrate 54 Name the following : 1. C - C - C - C - O - C - C - _____________________________________________ O 2. C- C - C - C - C - O - C - C - C - C \ O CH3 3. _______________________________________ O C-C-C-O-C-C-C-C-C\ \ \ CH3 C2H5 CH3 4. _____________________ ________________________________________ 5. ________________________________________________ Draw the following 1. 2-methylbutyl propanoate 2. 2-propyl -2-methylbutanoate 3. 2 - chloroethyl -2-chloroethanoate 4. 2-chloropropyl - 2 - methyl butanoate 5. isopropyl-2,2-dimethyl pentanoate 55 Properties of esters : Pg 66 1. 2. 3. 4. Simple esters are in __________________ water due to _____________ Boiling points are relatively compared to other organics of similar mass Esters are used for ______________________________ Most esters have a pleasant fruity odour. Complete pg 66 (11,12 ) , pg 68 ( 1,2,3,4 ) 56 ESTERS Name the compounds shown below: Draw the structural formula for the following: 1. methyl ethanoate O || CH3 – CH2 – C – O – CH3 Name: ________________________________________ CH3 – CH2 – CH2 – CH2 – CO – O – CH3 2. methyl 3-methylbutanoate 3. ethyl 2,2-dichloropropanoate 4. 2-methylpentyl propanoate Name: ________________________________________ O // CH3 – CH2 – C CH3 \ | O – CH2 – CH2 – CH2 – CH3 Name: ________________________________________ F O | // F – C – CH2 – C | \ F O – CH2– Cl Name: ________________________________________ 1. Write the IUPAC name for each of the following a) b) O O O O c) d) O O e) O O Cl OH O O 57 Day 13 : Ester Lab Day 14 : Amines and Amides ( pg 69 ) Amines are organic compounds closely related to ammonia and have a “fish-like” odour. They occur when organic compounds replace one or more of the hydrogens bonded to the central nitrogen in ammonia. H R1 N H - Amine Group amine is classified as Primary if it contains only one alkyl group, Secondary if it contains 2, and Tertiary if it contains 3. Classify these : 1. C - C - C - NH2 ____________________________________ 2. C - C- N- C - C- C____________________________________ C 3. C - C- C- C - N - C - C____________________________________ H Amides are produced when an amine or ammonia is treated with an organic acid. It looks like an acid with the –OH group replace by the –NH2. O R C H N H Amide Group The basic structural group of proteins and enzymes is the amide linkage. O R C R1 N H Amide linkage Naming Amines Common Names: Common names for amines are formed from the alkyl groups bonded to the nitrogen, followed by the word amine. Di-, tri-, and tetra are used to describe identical substituents. Draw the following : Methyl amine Dimethyl amine Trimethyl amine 58 IUPAC Names: Naming of amines is very similar to the naming of alcohols. The longest chain containing the amine is used as the root name. The -e ending in the naming of alkanes is changed to -amine, and a number gives the position of the amino group along the chain. Other substituents on the carbon chain are given numbers, and the prefix N- is used for each substituent on nitrogen. Draw these : 2-butanamine N-methyl butanamine N,N-diimethyl-2-butanamine 2-chloro-N,N-dimethyl-4-aminohexane Name the following : 1. - C - C - NH2 _______________________________________ 2. - C - N - C - ________________________________________ 3. CH3 - CH - CH2 - CH - CH2 - CH3 __________________________________ \ \ NH2 CH3 4. C - C - C - NH2 5. C - C - N - C 6. C - C- C- C - NH2 7. C - C - C - N - C - C - _____________________________________ _______________________________________ _____________________________________ ________________________________________________ 8. ____________________________________________________ 59 Draw these : 1. 2,3 - diamino - 2 - pentene 2. 3 – methyl-4-propylpentanamine 3. 1,4 - diaminocyclohexene 4. N – ethy-2-chloropropanamine 5. 2-aminopentane 6. N-methyl-2-butanamine 7. N,N-diethyl-3-aminoheptane Practice pg 72 ( 2,3 ) Amides ( R - C = O ) ( pg 74 ) NH2 - amides are derived from carboxylic acids and ammonia, or from a primary or secondary amine - named by dropping the E ending from the name of the parent hydrocarbon and adding the amide ending - numbering of the C chain begins at the C atom of the amide group. - if the Hydrogens on the amide group are replaced by hydrocarbon groups, precede the name of each replacing group by " N " to indicate that the group is attached to a nitrogen atom. 60 C - C = O is called NH2 ____________________________________________ O // - C - C - N - C - is called _________________________________________ H Name the following : 1. 2. 3. 4. CH3CH2 C = O NH2 H - C - C - N - C - CH3 O O - C - C - N - C - CH3 CH3 ___________________________________ __________ ___ O Cl - C - C - C - N - CH3 CH3 5. ___ ___________________________________ Draw the following : Rename if necessary 1. 2 – methyl-3-propyl butanamide 2. N-cyclopropyl -2-chloroethanamide 3. N – methyl methanamide 4. N - ethyl - N - methyl - 2 - chlorobutanamide 61 Complete pg 76 ( 4-6 ) Properties of Amines (pg 72 ) 1. 2. 3. 4. 5. Often have a fishy or foul odour smell Organic bases and form salts when reacted with acids Primary and Secondary amines exhibit bonding thus in water Tertiary amines have B.P. than the primary or secondary amines Nicotine, Epinephrine and Histamine are common examples. Adrenaline is an example of a secondary amine. Properties of Amides 1. 2. 3. 4. Very weakly basic Normally insoluble in water Relatively boiling points due to ____________; primary amides have higher B.P. than _______________________ Proteins and nylon are common polyamides. The amide acetaminophen is found in painkillers. Name the following Amines and Amides CH3 H3C N H _______________________________________________ H3C H N H3C H _________________________________________ H N ________________________________________ H H H3C N H O ________________________________________ 62 H O N H H N O H ________________________________ Draw the following Amines and amides . Rename if necessary a) 3-methylpentylamine b) methylethanamine d) p-aminobenzoic acid e) 2-isopropylpentanamide e) N-ethyl-N,N-dimethyl-3-ethyl butanamide Synthesis of Amines and Amides - primary amines are produced by adding ammonia to an _________________________________ amides are produced by reacting __________________________ with amines Complete pg 78 (1-5,9) Complete pg 95 (1-15,pg 96 ( 1-6) 63 AMINES Draw the condensed structural formula for the following: 1. aminobutane Name the compounds shown below: CH3 – CH2 – CH2 – NH2 Name: _______________________________________ Type of amine (1°, 2°,3°) : ________ CH3 – CH – CH – CH2 – CH3 | | CH3 NH2 Name : ______________________________________ Type of amine (1°, 2°,3°) : _______ CH2CH3 | CH3 – CH2 – CH2 – CH2 – CH2 – N – CH2CH3 Name : ______________________________________ Type of amine (1°, 2°,3°) : ___________ Br NH – CH2CH3 | | CH3 – C – CH2 – CH – CH3 | Br 2. 2 – aminopentane 3. N – methyl – 2 – aminobutane 4. N,N – diethyl – 3 – amino – 3 – methylpentane Name : _________________________________________ AMIDES Name the compounds shown below: O || CH3 – CH2 – C – NH – CH3 Draw the condensed structural formula for the following: 1. N – methyl ethanamide Name: ________________________________________ CH3 – CH2 – CH2 – CH2 – CO – N – CH3 | H 2. N,N – dimethyl propanamide 3. N – ethyl 3 - methylbutanamide 4. N – methyl 3,3 – dibromopropanamide Name: ________________________________________ O // CH3 – CH2 – C \ N – CH2 – CH3 / H Name: _______________________________ Cl O | // Cl – C – CH2 – C | \ Cl N – CH3 | CH2CH3 64 PROPERTIES OF ORGANIC FAMILIES Family 2 Alcohols Polarity Hydrogen bonding Solubility in water Melting and boiling points Additional characteristics O-H bond is very polar; small alcohols are ______polar than large alcohols Alcohols experience Hbonding with other alcohols and water Extremely soluble in water due to Hbonding. Solubility ______________with increasing number of carbon atoms. Due to Hbonding, most have higher melting and boiling points than alkanes with same number of carbon atoms. Most are ___________at room temperature. Extremely flammable Ethers ______shape around oxygen means two C-O dipoles do not counteract each other. C-O bond is ____polar than OH, ether is ____ polar than alcohol. No H-bonding due to no O-H bond. Can accept Hbonding from water. Usually soluble, solubility decreases with increasing size of carbon chains. Boiling points much lower than alcohols. Extremely flammable Amines C-N and N-H bonds are polar. Amines are usually polar. N-H bonds allow Hbonding. Amines with four or less carbons are miscible with water (due to H-bonding). Solubility decreases as # C increases. Primary and _____boiling points than tertiary (which do not contain N-H bond). -Widely found in nature. Often toxic. Many have medicinal properties. -Low molecular mass amines have ____smell. -Act as weak _________. Aldehydes and Ketones C=O bond is polar, so both usually polar H-bonding cannot occur between molecules since no O-H bond. H-bonds can form with water. Those with low molecular mass are very soluble in water. Those with large molecular mass are less soluble. BP are ________than corresponding alcohols, and ________than corresponding alkanes. -Aldehydes have strong ______ smell, while ketones smell _______Aldehydes with large molecular mass smell_______. Both used to make _________. -Can act as polar solvents, but also as solvents for non-polar compounds. Most are poisonous 65 Carboxylic Acids Due to polar O-H and C=O bonds, are polar compounds. H-bonding is strong, and also occurs with water. Those with low molecular mass are very soluble. Solubility decreases with increasing #C atoms. Melting and boiling are very high. -Often have unpleasant odours. -OH group does not behave like basic hydroxide ion (OH-). -Melting and boiling points are very high due to exceptionally strong H-bonding. Esters Like carboxylic acids, usually polar. Do not have OH bonds therefore cannot form Hbonds. Can accept H-bonds from water, so those with low molecular mass are soluble. Esters with C chains longer than 3 are not soluble. Low boiling points due to no H-bonds. Usually volatile liquids at room temperature. -Pleasant odour and taste, used to produce perfumes and artificial flavours. -Taste of many fruits come from esters. C-N and N-H bonds are polar and amides are similar to carboxylic acids. Primary amides have stronger Hbonds than carboxylic acids due to two N-H bonds. Secondary also form H-bonds. Soluble in water. Solubility decreases with increasing nonpolar HC part. Primary amides have higher melting and boiling than carboxylic acids. Many are _________at room temperature. -Amide called acetaminophen is painkiller -Urea (an amide), made from carbon dioxide and ammonia, first organic compound synthesized. Amides 66 Organic Compounds : Summary GROUP STRUCTURE Alkane NAMING GENERAL FORMULA PROPERTIES USES AND OCCURENCE __________ Non-polar ; Insoluble ; ______ M.P. and B.P. _____________ and combustion Fuels ; petrochemical building blocks Major source is ______________l _________ Same as alkanes __________and combustion reactions starting materials for many polymers produced from catalytic cracking of _________ Same as alkanes addition of 1 or 2 molecules of adding agent Combustion _________; insoluble in water ______________ and combustion DEHYDROGENATION OF 2 O ALCOHOL SOLVENT very diverse- antifreeze, alcoholic drinks, cosmetics, food methanol from destructive distillation of wood ethanol from distillation of sugars and industrially by hydrating ethene commonly occurs in foods, waxes present in fruits- sour taste, animal fats and vegetable oils used as solvents and artificial flavours ; commonly occur in animal fats and vegetable oils natural occuring fruits etc. antiseptics anaesthetics refrigerants insect repellants -ane Alkene - ene Alkyne - yne ____________ __ Aromatics - benzene or phenyl C6HnR(6-n) (variable) R -OH etc. -ol,diol,triol CnH2n+1OHet c. higher B.P.; soluble in water; many reactions e.g. esterfication, combustion Acids R-C=O \ OH - oic acid CnH2n+1COO H Esters O high B.P. first 4 soluble all inorganic reactions; esterfication insoluble in water react with water to form acid and alcohol CnH2n+1X CnH2n-1X C6H5X Variable B.P.'s generally insoluble in water intermediates in prep of many organics Alcohols R' yl R oate \\ -C \ O --R' Alkyl halides R - Xn X= F,Cl, Br, I flurochlorobromoiodo- very diverse solvents, foods, drugs, explosives major source is coal tar GROUP STRUCTURE (Draw the simplest in the family) NAMING ETHER 67 __________IN WATER __________B.P. THAN ALCOHOLS OXIDIZED TO _____________ _______________OF PRIMARY ALCOHOLS PRODUCED FROM ALKENES SOMEWHAT SOLUBLE IN WATER UNREACTIVE DEHYDROGENATION OF 2 O ALCOHOL SOLVENT Drop e from alkane add the word amine _________ODOUR ORGANIC BASES ____________IN WATER NICOTINE-3OAMINE BIODEGRATION OF AMINO ACIDS Drop e from alkane add the word amide HIGH B.P. INSOLUBLE IN WATER VERY WEAKLY BASIC SYNTHETIC POLYMERS PROTEINS al KETONE - ONE H-C-NH2 \\ O USES AND OCCURENCE __________________ ALDEHYDE AMIDE PROPERTIES ________ __________IN WATER ORGANIC SOLVENT yloxyether AMINE GENERAL FORMULA QUICK START SPRAYS 68 Naming and Drawing Organic Compounds Compound 3-ethyl-4-methyl-2-pentanol 3-isopropyl-2-heptanamine 2-ethyl-3-isopropyl-4-methylhexanal 1-chloro-3-methyl-2-propanone 2-sec-butyl-4-tert-butylpentanoic acid 2-chloroethyl-2-propyl butanoate N-methyl-4-isopropylhexanamide 3-tert-butyl-4-cyclobutyl-2-pentanone 2-methyl-3-propylbenzene 2-methoxy-2,3-dimethylbutane Structural diagram Hydrogen bonding (yes/no) 69 N,N-dimethyl-3-methyl-4-heptanamine Isopropyl- 2,3-dimethylhexanoate 3,4-octanediol N-ethyl-3-methylbutanamide 2,3,4-trimethylpentanal 6-propyl-2,4,5,7-tetramethyldecanoic acid 2-ethyl-3-methyl-4-octyne N,N-dimethyl-2-methyl heptanamide 4,5-dimethylcyclohexene 1-methoxy-4-chloro-2-pentene 4-methyl-2-pentynamide 2-ethyl-5-butylcyclohexane 70 NAMING ORGANIC COMBINATIONS OF FUNCTIONAL GROUPS 2. Name the following organic compounds. (a) CH3CH2COOH (b) CH3C(O)CH2CH2CH2CH2CH3 (c) CH3CONH2 (d) CH3CH2CH(CH3)CH2OH (e) CH3CH2C(CH3) 2CH2NH2 (f) CH3CH2CH2CH2OCH2CH3 (g) HCOOCH2CH2CH3 (h) CH3CH2CH(CH3)CH2CHO 71 Name the compounds shown below: Draw the structural formula for the following: NH2 O | // CH3 – CH – CH2 – C \ H 1. 2 – aminopropanioc acid OH O | // CH3 – C – CH2 – CH2 – C | \ NH2 OH 2. 3,3 – dihydroxyhexanal NH2 | CH3 – C – CH2 – CH2 – CH2 – OH | NH2 3. 1 – amino – 2 – propanol Br OH | | CH3 – C – CH2 – CH2 – CH – CH3 | H – N– CH3 4. 1 – hexen – 3 – ol H | CH3 – CH2 – C = C – CH3 | OH 5. 3 – amino – 1 – buten – 2 – ol NH2 | CH3 – CH2 – CH = C – CH3 | OH 6. 4 – amino – 4 – chloro – 2 – penten – 1 – ol 7. OH O | // CH3 – CH – CH2 – C – O – CH2 – CH3 | CH3 N – ethyl – N – methyl 2,2 – dihydroxybutanamide Day 15 Polymerization pg 100 Polymerization is the building up of large chains of molecules from repeating sequences of basic units called_____________. ______________ polymerization involves the build-up of monomers without the elimination of atoms. ____________________ polymerization results in the elimination of atoms as polymers are built. H H C H + C H H C H H ethene C H + ethene An example of condensation polymerization involves amino acids in the formation of proteins. H O + N OH H glycine O H N OH H + glycine peptide bond created i. Show the condensation polymerization of O HO OH HO ethylene glycol OH O terephthalic acid Ii Show the condensation polymerization of : account for the name nylon 6,6 OH NH2 H2N O O 1,6-diaminohexane OH adipic acid Watch video : www.teachersdomain.org : The Impact of Technology: Nylon materials have you come in contact with today? If synthetic materials didn't exist, what do you think those things would be made of instead? 73 What are the monomers needed to make ; ____________________________________ and ___________________________________________ _______________________________ and ______________________________________________ Complete table below : ( see page 101 and 139 ) Monomer Name Monomer Structure Polymer Name Polymer Structure Uses Propene (propylene) polypropylene indoor-outdoor carpeting ___________________ Chloroethene (vinylchloride) polywinylchloride (PVC) shower curtains, floor tiles, siding ____________________ Vinyl benzene polystyrene styrofoam, insulation, containers ____________________ tetrafluoroethene polytetrafluoro ethylene (teflon) non-stick pan coating What monomer is needed to make : _____________________________________________________ 74 Research (see pages 110) : Kevlar What are the monomers used to make Kevlar ? __________________________ and ______________________ Describe and account for its properties. ______________________________________________________________________________ ______________________________________________________________________________ Research the artificial sweetener aspartame (pg 120) Artificial Sweeteners: Health Risk or Health Benefit ? - can be used to decrease sugar consumption for overweight people, decrease tooth decay and increase food choices for diabetics aspartame – sweet, digests to form natural __________acids and __________________ ___________ – oxidized to form _____________– formaldehyde – changes protein function! ______________oxidized to form ___________ acid – interferes with mitochondrial function in cells __________and _____________acid build-up in ____________ nerves can cause irreversible damage – blindness but: small amounts of methanol in fruits, vegetables, beer, wine so: aspartame deemed “safe” if not too much is taken per day So: what amount is safe? Complete pg 107 ( 2,3,6 ) pg 111 ( 1-3 ) pg 113 ( 2,3,5 ) 75 ADDITION POLYMERS Draw the structures of polymers formed from each monomer: Ethene Polyethylene H H \ / C=C / \ H H Vinyl Chloride Polyvinyl Chloride (PVC) H H \ / C=C / \ H Cl 1,1 – dichloroethene Saran H Cl \ / C=C / \ H Cl tetrafluoroethene Teflon F F \ / C=C / \ F F cyanoethene Orlon H H \ / C=C / \ H CN Propene Polypropylene CH2 = CH | CH3 Styrene H H \ / C=C / \ H Polystryrene 76 CONDENSATION POLYMERS MONOMERS POLYMERS O \\ + C / HO CH2 – CH2 | | OH OH O // C \ OH Dacron (a polyester) HO OH + H2N – (CH2) 6 – NH2 O O \\ // C – CH2 CH2 – C / \ HO OH O O \\ // + C – (CH2) 4 – C / \ HO OH Nylon (a polyamide) H2N O \\ NH2 + C / OH O // C \ OH O H O // | // H2N – CH2 – C H2N – C – C + \ | \ OH CH3 OH glycine alanine Amino Acids H O | // + H2N – C – C | \ CH2 OH | phenylalanine H O | // H2N – C – C | \ CH3 OH alanine Protein (a polyamide) 77 H O | // H2N – C – C | \ CH2 OH + O // H2N – CH2 – C \ OH | | OH tryosine glycine Day 16 Summary : Organic Reactions (pg 80) 1. Combustion - all organics ; products are ____________________ and ______________ 2. Substitution - Alkanes, Cycloalkanes and Aromatics : treated with halogens e.g. chlorine gas Alcohols : treated with a hydrohalogen compound like HCl 3. Addition- Alkenes, Alkynes, cycloalkenes : treated with Hydrogen gas [ hydogenation ] Alkenes, Alkynes, cycloalkenes : treated with halogens [ halogenation ] Alkenes, Alkynes, cycloalkenes : treated with a hydrohalogen [ hydrohalogenation ] Alkenes : treated with water [ hydration ] Ketones and Aldehydes : treated with hydrogen gas [ reduction ] - Alcohols : treated with sulfuric acid form alkenes [dehydration] Formation of ethers from alcohols eliminates water [condensation] formation of esters from an alcohol and a acid eliminated water[condensation] formation amides from amines and carboxylic acids[condensation] 4. Elimination 5. Mild Oxidation - primary alcohols undergo mild oxidation producing an aldehyde which can be further reduced to a carboxylic acid secondary alcohols when oxidized form ketone tertiary alcohols cannot be oxidized easily Classify the following reactions : ___________________________________________ ___________________________________________ ___________________________________________ _____________________________________________ 78 Identifying Organic Reactions Reaction 1 Reaction 2 Reaction 3 Reaction 4 Reaction 5 Reaction 6 Reaction 7 Reaction 8 yes no no no no no Hydrolysis: Does a large organic molecule such as an ester or amide split in half to form two smaller organic molecules? Condensation: Do two organic molecules combine to form a large organic molecule such as an ester or amide? Reduction: Does the product have more bonds to hydrogen and fewer bonds to oxygen? Oxidation: Does the product have fewer bonds to hydrogen and more bonds to oxygen? Substitution: Has an atom or group of atoms been substituted for a different atom or group of atoms? Elimination: Does the organic product have more double or triple bonds than the reactant? Addition: Does the organic product have fewer double or triple bonds than the reactant? 79 no Type of reaction addition 80 ORGANIC REACTIONS For each of the following reactions complete the word equations; write a balanced chemical equation for any combustion reaction and state the type of reaction. a) n-hexane + oxygen --------> carbon dioxide + ____________________ b) methane + chlorine --------> c) propene + bromine --------> d) cyclopropene + chlorine ---------> _________________________ e) butanal _______________________ f) K2Cr2O7 --------------------> _____________________________ [O] [O] 2,4-dimethyl-3-hexanol -------------> g) 3,3-dimethylhexanoic acid + propanol ------> [O] -----------> h) 1-propanol i) propanal j) benzene + chlorine ---------> + _________________ [O] ----------> _____________________________ K2Cr2O7 K2Cr2O7 ---------------> ------------------> k) ethanol l) 1-butyne + 2moles iodine ------------> m) 2-methylpropene + hydrogen ---------> n) 2-butyne + oxygen ------------> carbon monoxide + _______________ o) propene + water -------------> _________________________ p) 2-propanol q) 1-propanol r) butanal [O] -------------------> [O] [O] -----------------> -------------> + hydrogen -------------> ______________________________ s) propanone + hydrogen -----------> ______________________________ t) methanoic acid + 3-hexanol -------> K2Cr2O7 u) 2-methyl-2-propanol ------------------> 81 Day 17 : Slime Lab Day 18 : Review : Pg 82 (1a,c,1a,d,3) pg 96 (7a-j,8a-j, 10a-e) Complete pg 145 ( 1,5,6,7,8 ), pg 146 ( 1,2,19,21 ) pg 150 ( 1-9, 11-14,16-24 ) pg 152 ( 1-11), 13,21,22 SCH4U1 UNIT 2 REVIEW Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. What is the correct name for the above compound? a. 2-methyl-3-butanol d. 3-methyl-2-butanol b. 2-pentanol e. none of these c. isobutanol ____ 2. What results when a secondary alcohol is oxidized? a. a ketone d. an acid b. an amine e. no reaction c. an aldehyde ____ 3. The correct name for the compound given above is which of the following? a. 3-amino-3-hexanone c. N-propylpropanamide b. ethyl ethanamide d. N-ethylethanamide ____ 4. The correct name for the compound given above is which of the following? a. 2-cycloproproxylcyclobutane c. 2-cyclobutoxycyclopropane b. cyclobutylpropoxy ether d. cyclopropoxycyclobutane ____ 5. 1-amino-4,4-difluoro-2-pentanol is the correct name for which of the following compounds? a. c. b. d. 82 ____ 6. Which of the following is the correct name for the diagram below? a. propylcyclohexylcyclohexanoate b. 2-cyclohexoxycyclohexylpropanoate ____ 7. Which of the reactions shown are reductions? a. (1), (2), and (3) b. (1) and (3) only c. (2) and (4) only ____ d. (4) only e. (1) and (4) only 8. What is the correct IUPAC name for compound below? a. 2-ethyl-5-hexanone b. 5-ethyl-2-hexanone c. 3-methyl-6-heptanone ____ c. dicyclohexanylpropanoate d. methylcycloxypropanoate d. 5-methyl-2-heptanone e. 2-heptanone 9. The correct name for the compound given below is which of the following? a. 1-phenyl-1-butanone b. phenylbutanal c. 4-phenyl-4-butanone d. butanonebenzene ____ 10. The polymer Torlon is used in automotive engines as a plastic replacement for steel parts. It is produced from the monomers. and 83 What is the formula of Torlon? a. c. b. d. ____ 11. What is the monomer for the polymer Kel-F shown below? a. c. b. d. ____ 12. Which of the following polymers is Nylon 6,4? a. b. c. d. 84 Completion Complete each sentence or statement. 13. When a straight chain alcohol is reacted with , , and are both formed. The structure of the original alcohol was _________________________. 14. The correct IUPAC name for the structure given below is _____________________________________________. Short Answer 15. Propane can be used as starting material for either propanal or propanone. Explain how this is possible. 16. The structure given below is PenicillinG, an antibiotic. Circle the functional groups in the molecule and list their corresponding names. 17. Write the reaction showing how the ester. , can be prepared from a carboxylic acid and an alcohol. Provide the names of all reactants below your equation. 18. Nomex is a polymer used to make flame-resistant clothing for firefighters. A portion of its structure is provided below. Write a polymerization reaction showing its production from monomers. What type of reaction is this? 85