NORTH SALEM: EXPANDED REFERENCE TABLES FOR HONORS CHEMISTRY. BASED UPON THE 2011 NYS REFERENCE TABLES FOR CHEMISTRY Table A: Standard Temperature and Pressure Standard temperature 0.0 Celsius (°C) 273 Kelvin (K) Standard pressure 1 atmosphere (atm) 101.3 kiloPascals (kPa) 760 torr 760 mm Hg Table B: Prefixes for Commonly Used Units Prefix Meaning Interpretation (m) piconanomicromillicentdecidekahectokilo- 10-12 10-9 10-6 10-3 one-thousandth 10-2 one-hundredth 10-1 one-tenth 10-1 ten 102 one hundred 103 one thousand 1 pm = 1 x 10-12 m 1 nm = 1 x 10-9 m 1 μm = 1 x 10-6 m 1 mm = 0.001 m 1 cm = 0.01 m 1 dm = 0.1 m 1 dam = 10 m 1 hm = 100 m 1 km = 1,000 m http://physics.nist.gov/Pubs/SP811/sec06.html and http://www.nist.gov/pml/wmd/pubs/upload/appc-13-hb44-final.pdf A Few Common English to Metric Equalities 1 inch = 2.54 centimeters 1 pound = 454 grams 1 mile = 5,280 feet = 1.61 kilometers 1.06 quart = 1 dm3 or liter 1 calorie = 4.18 Joules Table D: Selected Units Symbol Name m g Pa K mol J meter gram pascal kelvin mole joule s min h d y dm3 M or M second minute hour day year cubic decimeter Liter cubic meter cubic centimeter parts per million parts per billion molarity M mole mass μ atomic mass unit L m3 cm3 ppm ppb Table C: Constants for Water and Mole Theory Water’s Melting / Freezing point 0.0 C Water’s Normal boiling point 100 C Water’s Specific Heat 4.18 J/g• K Water’s Heat of Fusion constant 334 J/g Water’s Heat of Vaporization constant 2,260 J/g 1.00 g/cm3 Water’s Density @ 3.98 C Avogadro’s Constant Molar Volume for gases @STP Universal Gas Constant (R) 6.02 x 1023 species 22.4 L 0.08206 atmL/molK Dimension or Quantity length mass pressure temperature amount of substance energy, work, quantity of heat exchange time time time time time volume volume (note 1 L = 1 dm3) volume volume concentration concentration concentration a mass in grams of Avogadro’s constant of species; a gram formula mass (GFM) atomic mass Name Table E: Selected Polyatomic Ions Formula Name Ammonium Formula NH4+ Sulfite SO32- Hg22+ C2H3O2CH3COOCNCO32- Sulfate Thiosulfate SO42S2O32- Hydrogen Sulfate Hypochlorite Chlorite Chlorate Perchlorate Chromate Dichromate Permanganate Arsenate Iodate HSO4ClOClO2ClO3ClO4CrO42Cr2O72- (not ammonia) Mercury (I) Acetate Cyanide Carbonate Hydrogen Carbonate Oxalate Thiocyanate Nitrite Nitrate Hydroxide Peroxide Phosphate HCO3C2O42SCNNO2NO3OHO22PO43- MnO4AsO43IO3- •As a rule, use the –ate ending as a “starting point” or standard when multiple versions of an ion exists. With this in mind, formulae & names have a pattern. A suffix of –ITE means there is one fewer oxygen than the “standard” Any ion with a name of HYPO____ITE has two fewer oxygen than the “standard” Any ion named as PER _____ATE has one more oxygen, than that “standard” •When no numeric charge is given, as in + or -, the value to be assumed is “1” Table F: Solubility Guidelines for Ionic Compounds in Aqueous Solution Ions That Form Soluble Compounds Group 1 ions (Li+1, Na+1 etc…) ammonium (NH4+) Exceptions (thus insoluble) none Ions That Form Insoluble Compounds* carbonate (CO32-) none chromate (CrO42-) nitrate (NO3-) none phosphate (PO43-) acetate (C2H3O2- or CH3COO-) hydrogen carbonate (HCO3-) chlorate (ClO3-) Grp 17 halides (Cl-, Br-, I-) sulfate (SO42-) none sulfide (S2-) none hydroxide (OH-) none when combined with Ag+, Pb2+, Hg22+ when combined with Ag+, Ca2+, Sr2+, Ba2+, or Pb2+ Exceptions (thus soluble) when combined with Grp 1 ions or ammonium ion (NH4+) when combined with Grp 1 ions Ca2+, Mg2+, or ammonium ion (NH4+) when combined with Grp 1 ions or ammonium ion (NH4+) when combined with Grp 1 ions or ammonium ion (NH4+) when combined with Grp 1 ions, or Ca2+, Ba2+, Sr2+, or (NH4+) *compounds having very low solubility (poor dissociation into hydrated ions [electrolytes]) in water Table G: Solubility Curves at Standard Pressure Table H: Vapor Pressures of 4 Liquids Vapor Pressure of Water at Various Temperatures (An Extension of Table H) Temp Pressure Temp Pressure (kPa) (kPa) (C) (C) 0 0.6 25 3.2 3 0.8 26 3.4 5 0.9 27 3.6 8 1.1 28 3.8 10 1.2 29 4.0 12 1.4 30 4.2 14 1.6 32 4.8 15 1.7 35 5.6 16 1.8 37 6.3 18 2.1 40 7.4 19 2.2 50 12.3 20 2.3 60 19.9 21 2.5 70 31.2 22 2.6 80 47.3 23 2.8 90 70.1 24 3.0 100 101.3 Table I: Heats of Reaction at 101.3 kPa and 298 K Reaction ∆H (kJ)* CH4(g) + 2 O2(g) CO2(g) + 2 H2O(𝓁) C3H8(g) + 5 O2(g) 3 CO2(g) + 4 H2O(𝓁) 2 C8H18((𝓁) + 25 O2(g) 16 CO2(g) + 18 H2O(𝓁) 2 CH3OH (𝓁) + 3 O2(g) 2 CO2(g) + 4 H2O(𝓁) C2H5OH(𝓁) + 3 O(g) 2 CO2(g) + 3 H2O(𝓁) C6H12O6(s) + 6 O(g) 6 CO2(g) + 6 H2O(𝓁) 2 CO(g) + O2(g) 2 CO2(g) C(s) + O2(g) CO2(g) 4 Al(s) + 3 O2(g) 2 Al2O3(s) N2(g) + O2(g) 2 NO(g) N2(g) + 2 O2(g) 2 NO2(g) 2 H2(g) + O2(g) 2 H2O (g) 2 H2(g) + O2(g) 2 H2O (𝓁) N2(g) + 3 H2(g) 2 NH3(g) 2 C(s) + 3 H2(g) C2H6(g) 2 C(s) + 2 H2(g) C2H4(g) 2 C(s) + H2(g) C2H2(g) H2(s) + I2(g) 2 HI(g) 𝑤𝑎𝑡𝑒𝑟 KNO3(s) → 𝑤𝑎𝑡𝑒𝑟 NaOH(s) → 𝑤𝑎𝑡𝑒𝑟 NH4Cl(s) → K+(aq) + NO3- (aq) -890.4 -2219.2 -10943 -1452 -1367 -2804 -566.0 -393.5 -3351 +182.6 +66.4 -483.6 -571.6 -91.8 -84.0 +52.4 +227.4 +53.0 +34.89 Na+(aq) + OH- (aq) -44.51 NH4+(aq) + Cl- (aq) +14.78 𝑤𝑎𝑡𝑒𝑟 NH4NO3(s) → 𝑤𝑎𝑡𝑒𝑟 NaCl(s) → NH4+(aq) + NO3- (aq) Na+(aq) + Cl- (aq) +25.69 +3.88 𝑤𝑎𝑡𝑒𝑟 -48.83 LiBr(s) → Li+(aq) + Br- (aq) -55.8 H+(aq) + OH- (aq) H2O(𝓁) *The ∆H values are based on molar quantities represented in the equations. A minus sign indicates an exothermic reaction. Increasingly stronger oxidizing agent E0 (V) +2.87 +1.82 +1.50 +1.49 +1.44 +1.36 +1.33 +1.23 +1.07 +0.96 +0.90 +0.90 +0.85 +0.80 +0.77 +0.59 +0.54 +0.52 +0.49 +0.35 +0.34 +0.16 +0.15 0.00 -0.04 -0.13 -0.14 -0.23 -0.28 -0.40 -0.41 -0.74 -0.76 -0.83 -1.18 -1.66 -1.70 -2.38 -2.71 -2.76 -2.89 -2.90 -2.92 -3.04 Standard Species to the right of the reaction arrow of the half reaction are increasingly stronger reducing agents Table J: Table of Reduction Half-Reaction Potentials F2(g) + 2e- → 2F-(aq) Co3+(aq) + e- → Co2+(aq) Au3+(aq) + 3 e- → Au(s) MnO4-(aq) + 8H+(aq) + 5e- → Mn2+(aq) + 4H2O(l) Ce4+(aq) + e- → Ce3+(aq) Cl2(g) + 2e- → 2Cl-(aq) Cr2O72-(aq) + 14H+(aq) + 6e- → 2Cr3+(aq) + 7H2O(l) O2(g) + 4e- → 2O2Br2(l) + 2e- → 2Br-(aq) NO3-(aq) + 4H+(aq) + 3e- → NO(g) + 2H2O(l) 2Hg2+(aq) + 2e- → Hg22+(aq) ClO-(aq) + H2O(l) + 2e- → Cl-(aq) + 2OH-(aq) Hg2+(aq) + 2e- → Hg(l) Ag+(aq) + e- → Ag(s) Fe3+(aq) + e- → Fe2+(aq) ClO2-(aq) + H2O(l) + 2e- → ClO-(aq) + 2OH-(aq) I2(s) + 2e- → 2I-(aq) Cu+(aq) + e- → Cu(s) IO-(aq) + H2O(l) + 2e- → I-(aq) + 2OH-(aq) ClO3-(aq) + H2O(l) + 2e- → ClO2-(aq) + 2OH-(aq) Cu2+(aq) + 2e- → Cu(s) Cu2+(aq) + e- → Cu+(aq) Sn4+(aq) + 2e- → Sn2+(aq) 2H+(aq) + 2e- → H2(g) Fe3+(aq) + 3e- → Fe(s) Pb2+(aq) + 2e- → Pb(s) Sn2+(aq) + 2e- → Sn(s) Ni2+(aq) + 2e- → Ni(s) Co2+(aq) + 2e- → Co(s) Cd2+(aq) + 2e- → Cd(s) Fe2+(aq) + 2e- → Fe(s) Cr3+(aq) + 3e- → Cr(s) Zn2+(aq) + 2e- → Zn(s) 2H2O(l) + 2e- → H2(g) + 2OH-(aq) Mn2+(aq) + 2e- → Mn(s) Al3+(aq) + 3e- → Al(s) Be2+(aq) + 2e- → Be(s) Mg2+(aq) + 2e- → Mg(s) Na+(aq) + e- → Na(s) Ca2+(aq) + 2e- → Ca(s) Sr2+(aq) + 2e- → Sr(s) Ba2+(aq) + 2e- → Ba(s) K+(aq) + e- → K(s) Li+(aq) + e- → Li(s) Table K: Formulae and Names of Common Acids Formula Name HCl(aq) hydrochloric acid HBr(aq) hydrobromic acid HI(aq) hydroiodic acid H2SO4(aq) sulfuric acid HClO4 perchloric acid HNO3(aq) nitric acid HNO2(aq) nitrous acid H2SO3(aq) sulfurous acid H2PO4(aq) phosphoric acid H2S(aq) hydrosulfuric acid H2CO3(aq) or carbonic acid CO2(aq) CH3COOH(aq) acetic acid (or more or formally, ethanoic HC2H3O2(aq) acid) Table L: Formulae and Names of Common Bases Formula Name NaOH(aq) sodium hydroxide KOH(aq) potassium hydroxide Ca(OH)2(aq) calcium hydroxide NH4(OH)(aq) ammonium hydroxide (or or NH3(aq) aqueous ammonia) Table M: Common Acid/Base Indicators Acid / Base Range / Color Color Change Indicator In That Range Methyl Orange 3.2-4.4 Red (below 3.2) orange Yellow (above 4.4) Bromothymol Blue 6.0-7.6 Yellow (below 6.0) (BTB) green Blue (above 7.6) Phenolphthalein 8.2-10 Colorless (below 8.2) (phth) pink Deep Pink (above 10) Litmus 5.5-8.2 Red (below 5.5) purple Blue (above 8.2) Bromcresol Green 3.8-5.4 Yellow (below 3.8) green Blue (above 5.4) Thymol Blue 8.0-9.6 Yellow (below 8.0) green Blue (above 9.6) Reference pH Scale & Indicators at 20°C 9 10 11 12 13 Drano 8 Tums 7 Baking Soda 6 BASE (alkaline) Egg White 5 Physiological pH 4 NEUTRAL Distilled Water 3 Tap Water 2 Black Coffee 1 Orange Juice 0 Vinegar (acetic acid) ACID 14 Table N: Selected Radioisotopes Nuclide Half-Life Decay Mode 198 2.69 d 𝛽− C 5730 y 𝛽 − Ca 175 ms 𝛽+ 5.26 y 𝛽 − 30.23 y 𝛽− Au 14 37 60 Co 137 Cs 53 + Nuclide Name gold-198 carbon-14 calcium-37 cobalt-60 cesium-137 8.51 min 𝛽 Fr 27.5 s francium-220 H 12.26 y 𝛽− hydrogen-3 Fe 220 3 131 I 8.07 d 𝛽 37 K 1.23 s 𝛽+ potassium-37 42 K 12.4 h 𝛽 − potassium-42 85 Kr 10.76 y 𝛽− 16 − iron-53 − iodine-131 krypton-85 N 7.2 s 𝛽 Ne 17.2 s 𝛽+ P 14.3 d 𝛽 − Pu 2.44 x 104 y plutonium-239 226 Ra 1600 y radium-226 222 Rn 3.82 d radon-222 90 Sr 28.1 y 𝛽− strontium-90 19 32 239 99 Tc 232 Th 5 − nitrogen-16 neon-19 phosphorus-32 2.13 x 10 y 𝛽 1.4 x 1010 y thorium-232 technetium-99 233 1.62 x 10 y uranium-233 235 7.1 x 108 y uranium-235 uranium-238 U U 238 U 5 9 4.51 x 10 y ms = milliseconds, s = seconds, min = minutes h = hours, d = days, y = years Table O: Symbols Used In Nuclear Chemistry alpha particle beta particle 4 2He or He-4 or 0 −1e or 0 −1𝛽 4 2 𝛽− gamma radiation 0 0𝛾 γ neutron 1 0𝑛 n proton positron 1 1H 0 +1e or or 1 1p p 0 +1𝛽 𝛽+ Table P Organic Prefixes # of carbons Prefix 1 meth2 eth3 prop(pronounced as in propeller) 4 but(pronounced as in beauty) 5 pent6 hex7 hept8 oct9 non10 dec12 dodec(a.ka. laur-yl) 16 Hexadec- (a.k.a. cet-yl or myrist-ic) 18 octadec(a.k.a. stear-yl) 20 eicos(a.k.a. arachid-ic) Family General Formula Formula alkane CnH2n+2 alkene alkyne CnH2n CnH2n-2 C4H10 C 4 H8 C 4 H6 Table Q: The Hydrocarbons Examples Name Structure butane 1-butene 1-butyne Alternative Views H H H H | | | | H—C—C—C—C—H | | | | H H H H H H | | H—C—C—C C—H | | | | H H H H H H | | H—C—C—C C—H | | H H CH3CH2CHCH CH3 – CH2 – C ≡ CH arene (aromatic hydrocarbon) CnH2n-6 C 6 H6 benzene note: the term aromatic refers to a closed ring with C or N with alternating double bonds where "n" equals the number of carbons in the longest (parent) chain Table R: Organic Compounds With Functional Groups Class Description a Example Examples a Alcohol R-OH a (Monohydroxy) 1 (O-H) group bonded to a carbon. Soluble in water (polar molecule) C3H7OH b C4H9OH Alcohol (Glycol or Dihydroxy) Aldehyde Ester 2 O-H groups (or OH groups) bonded to carbon. Water soluble (polar molecule) O || R—C— H A carbonyl group on a terminal C with carbon or hydrogen as the "R" group O || R—O—C—R' a product of an alcohol & carboxylic acid reaction. Ketone b (the most common form of organic acid) Amine (simple) C3H6(OH)2 a a HCOH b CH3COH a CH3OOCCH3 b C2H5OOCC2H5 O || R— C—R' a carbonyl group on an "interior" or nonterminal carbon Carboxylic Acid C2H4(OH)2 O || R—C—O-H a carboxyl group (COOH) bonded to a carbon R-Group. RNH | H a derivative of NH3 At least one H is replaced with an organic group. A weak base (B-L) a C3H6O b C6H12O (also called a halocarbon) R-X Halogen(s) {X} are substituted onto a hydrocarbon, by removing hydrogen(s) 1,2-ethanediol (ethylene glycol) H H | | H—C—C—H | | OH OH b methanal (formaldehyde) b ethanal (acetaldehyde) H O | || H—C—C—H | H CH3COOH b C2H5COOH a C3H7Br b C3H6F2 H H H | | | H—C—C—C—H | | | H O-H O-H methyl ethanoate H O H | || | H—C—O—C—C—H | | H H b ethyl propanoate H H O H H | | || | | H—C— C—O—C—C—C—H | | | | H H H H a 2-propanone (acetone) b 3-hexanone H H H O H H | | | || | | H—C—C—C—C—C—C—H | | | | | H H H H H H O H | || | H—C—C—C—H | | H H ethanoic acid (acetic acid) H O | || H—C—C—O—H | H a 1-propanamine (1-propylamine) b 1-bromopropane Br H H | | | H—C—C—C—H | | | H H H propanoic acid H H O | | || H—C—C—C—O—H | | H H b H H H | | | HCCCNH | | | | H H H H C6H5NH2 a 1,2-propanediol (propylene glycol) a C3H7NH2 b 2-butanol H H H H | | | | H—C—C—C—C—H | | | | H OH H H O || H—C—H a Halide 1-propanol a a Name / Structure b H H H | | | H—C—C—C—O-H | | | H H H a a b Example Name / Structure phenylamine (aniline) NH | H b 1,2-difluoropropane H H F | | | H—C—C—C—H | | | H F H This page has been left blank, deliberately. s block 1 18 Hydrogen 1.00794 1s1 Element Name Sodium Lithium Beryllium 6.941 9.012182 p block (except for Helium) 22.989770 Relative Atomic Mass 2 Helium Element Symbol Atomic Number 13 [Ne] 3s1 Electron Configuration 14 15 16 4.002602 1s2 17 Boron Carbon Nitrogen Oxygen Fluorine Neon 10.811 12.0107 14.00674 15.9994 18.9984 20.1797 [He] 2s2 2p2 [He] 2s2 2p3 [He] 2s2 2p4 [He] 2s2 2p5 [He] 2s2 2p6 B [He] 2s1 Sodium 22.989770 [Ne] 3s1 5 [He]2s22p1 [He] 2s2 Magnesium [Ne] 3s2 3 4 5 6 7 Potassium Calcium Scandium Titanium Vanadium Chromium 39.0983 40.078 44.955910 47.867 50.9415 51.996 54.938049 [Ar] 3d2 4s2 [Ar] 3d3 4s2 [Ar] 3d5 4s1 [Ar] 3d5 4s2 [Ar] 4s1 [Ar] 4s2 [Ar] 3d1 4s2 8 Manganese * 9 10 11 Silicon 28.0855 [Ne] 3s2 3p1 [Ne] 3s2 3p2 14 12 Phosphorus Aluminum 26.98153 d block 24.3050 30.973761 [Ne] 3s2 3p3 Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic 58.933200 58.6934 63.546 65.39 69.723 72.61 74.92160 [Ar] 3d7 4s2 * [Ar] 3d10 4s1 [Ar] 3d8 4s2 [Ar] 3d10 4s2 [Ar] 3d10 4s24p1 Chlorine Argon 35.4527 39.948 [Ne] 3s2 3p5 [Ne] 3s2 3p6 Si 55.845 [Ar] 3d6 4s2 Sulfur 32.066 [Ne] 3s2 3p4 [Ar]3d104s24p3 [Ar] 3d10 4s24p2 Selenium Bromine Krypton 78.96 79.904 83.80 [Ar] 3d10 4s24p4 [Ar]3d104s24p5 [Ar]3d10 4s2 4p6 2 Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin 85.4678 87.62 88.90585 91.224 92.90638 95.94 (98) 101.07 102.90550 106.42 107.8682 112.411 114.818 118.710 [Kr] 5s2 [Kr] 4d1 5s2 [Kr] 4d2 5s2 Cesium Barium Lanthanum Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury Thallium Lead Bismuth Polonium Astatine Radon 132.90545 137.327 178.49 180.9479 183.84 186.207 190.23 192.217 195.078 196.96655 200.59 204.3833 207.2 208.98038 (209) (210) (222) 4f14 5d3 6s2 4f14 5d4 6s2 4f14 5d10 6s2 6p3 4f14 5d10 6s2 6p4 4f14 5d10 6s2 6p5 [Xe]4f145d106s26p6 [Kr] 5s1 [Xe] 6s1 Francium (223) [Rn] 7s1 [Xe] 6s2 138.9055 [Xe] 5d1 6s2 Radium Actinium (226) (227) [Rn] 7s2 * [Kr] 4d4 5s1 4f14 5d2 6s2 Rutherfordium (267) Dubnium (268) * [Kr] 4d5 5s1 * 4f14 5d5 6s2 Seaborgium (271) [Kr] 4d10 5s0 [Kr] 4d8 5s1 4f14 5d7 6s2 4f14 5d6 6s2 Bhorium (272) * * [Kr] 4d7 5s1 [Kr] 4d5 5s2 Hassium (270) 4f14 5d9 6s1 Meitnerium (276) * [Kr] 4d10 5s1 4f14 5d10 6s1 Darmstadtium (281) [Kr] 4d10 5s2 [Kr]4d105s25p1 4f14 5d10 6s2 Roentgenium (280) Antimony [Kr]4d10 5s25p2 4f14 5d10 6s2 6p1 4f14 5d10 6s2 6p2 Copernicium (285) Tellurium Iodine Xenon 127.60 126.90447 131.29 121.760 [Kr]4d10 5s25p4 [Kr] 4d10 5s25p3 Flerovium (289) 10 2 6 [Kr]4d10 5s25p5 [Kr]4d 5s 5p Livermorium (293) [Rn] 6d1 7s2 Key: indicates the existence of energy levels equivalent to an atom of the noble gas, [Xe], preceding the listed sublevels for elements of atomic numbers 58 - 85. This is used to manage the available space. italicized symbols indicate synthetic / human made/ lab created elements, although your notes will qualify this for 43Tc and 94Pu which were, at one time, found naturally in the crust of the Earth, but are now in miniscule quantities & now must be synthesized. ( ) indicates the longest lived isotope of an element for which the atomic mass is indeterminate *indicates that single atoms in the gaseous phase of the element are exceptions to the Aufbau Principle/ Madelung rule / Klechkowski rule f block Lanthanoid Series Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium 140.116 140.90765 144.24 (145) 150.36 151.964 157.25 158.92534 162.500 164.93032 167.259 168.93421 173.054 174.9668 4f1 5d1 6s2 4f3 6s2 4f4 6s2 4f5 6s2 Thorium Protactinium Uranium Neptunium 232.038 231.03588 238.0289 (237) 2 2 [Rn] 6d 7s [Rn]5f26d17s2 Actinoid series [Rn]5f3 6d1 7s2 [Rn]5f4 6d1 7s2 4f 6 6s2 Plutonium 4f7 6s2 Americium (244) (243) [Rn]5f6 7s2 [Rn]5f7 7s2 4f7 5d1 6s2 4f9 6s2 4f10 6s2 4f11 6s2 Curium Berkelium Californium Einsteinium (247) (247) (251) (252) [Rn]5f7 6d1 7s2 [Rn] 5f9 7s2 [Rn] 5f10 7s2 [Rn] 5f11 7s2 4f12 6s2 Fermium (257) [Rn] 5f12 7s2 4f13 6s2 Mendelevium (258) [Rn] 5f13 7s2 4f14 6s2 4f14 5d1 6s2 Nobelium Lawrencium (259) (262) [Rn] 5f14 7s2 [Rn]5f147s17p1 TABLE T: Selected Equations Number of Nucleons mass # = # of protons + # of neutrons Relative Atomic Mass Relative atomic mass = (%)(isotopic atomic mass) + (%)(isotopic atomic mass) + ... Temperature Density (g/mL or g/cm3) K = C + 273 Density = mass volume Molar Density (g/mL) Molar Density(g) @STP = M 22.4 L where K = Kelvin Temperature & C = Celsius Temperature where M = mole mass Percent Composition % composition by mass = mass of the Part you want x 100 mass of the Whole Percent Error % error = | measured value – accepted value | x 100 accepted value Calorimetry q = mc∆T where q = energy in joules m = mass in grams c = specific heat in J/gram • K ∆T = change in temperature (may be in K or °C) q = mHf q = mHv P1V1 = P2V2 T1 T2 where Hf = heat of fusion constant in J/g Hv = heat of vaporization constant in J/g where P = pressure T = Kelvin Temperature V = volume PV = nRT where P = pressure T = Kelvin temperature V = volume in Liters n = number of moles R = 0.08206 atmL/molK m = mass in grams M = mole mass Combined Gas Law Ideal Gas Law PV = m RT M Moles (mol) moles = mass in grams M where M = mole mass Molarity (M or M or [ ]) Molarity = moles of dissolved solute Liters of solution Parts per Million (ppm) Parts per Billion (ppb) ppm = grams of solute x 106 grams of solution %Mass/Mass % m/m = mass of solute x 100 mass of solution Titration (Neutralization) (#H1+ )(Macid)(Vacid) = (Mbase )(Vbase)(#OH1-) pH pH pH = -log[H3O1+] pH + pOH = 14 ppb = grams of solute x 109 grams of solution where V = volume M = molarity Table U: Summary of Selected Reactions Reaction Type Example Comment(s) Acid Base Neutralization HNO3(aq) + KOH(aq) H2O(ℓ) + KCl(aq) + energy Saponification C51H88O6(ℓ) + 3 NaOH(aq) 3 CH3(CH2)14CO2Na(s) + CH2CHCH2(OH)3(aq) an acid in solution a base in solution lipid water a base in solution + a soap CH4(g) Combustion of a metal 2 Mg(s) + O2(g) 2 MgO(s) + energy oxygen a metal Esterification O2(g ) oxygen CO2(g) an alcohol Na2O(s) an ester in solution water carbonic acid in solution + H2O(ℓ) water water associated with acid precipitation, soda or seltzer water & blood pH 2 NaOH(aq) sodium hydroxide (a base) in solution a base in solution hydrogen gas acid in solution a salt carbon dioxide a metal oxide in water produces a solution with a basic (alkaline) pH under some circumstances the H2 can ignite in the O2 of air for a secondary & explosive reaction CaCO3(s) + 2 HCl(aq) CaCl2(aq) + CO2(g) + H2O(ℓ) calcium carbonate associated with flavorings / fats water a nonmetal oxide in water produces a solution with an acidic pH 2 Na(s) + 2 H2O(ℓ) 2 NaOH(aq) + H2(g) a metal Metal Carbonate in Acid water + H2O(ℓ) H2CO3(aq) sodium oxide Active Metal in Acid burning in the presence of (di)oxygen gas CO2(g) + H2O(ℓ) + energy carbon dioxide CH3COOH(aq) + CH3CH2OH(ℓ) CH3COOCH2CH3(aq) + H2O(l) carbon dioxide Metal Oxide in Water glycerol metal oxide an organic acid in solution Nonmetal Oxide in Water making of soap via the hydrolysis of a lipid (a.k.a. glycerin) Complete Combustion (of an organic compound) an organic compound linked to the controlled process of acid/base titration a salt in solution water metal carbonates are weak bases, based on Bronsted-Lowry Theory; associated with the buffering of lakes due to acid precipitation Table V: Various Standard & Qualitative Tests TEST FOR: TEST dioxygen gas O2(g) Use a flaming splint A POSITIVE TEST RESULTS IN, (PRODUCES, CAUSES)… a flame to flare up and to burn more vigorously dioxygen gas O2(g) carbon dioxide gas CO2(g) Use a glowing splint Bubble gas into Ca(OH)2(aq) a glowing ember to re-light and to burn a white precipitate (solid). Addition of more carbon dioxide reverses the reaction, due to an acid / base reaction between excess carbonic acid (CO2 + H2O) and the alkaline or basic Ca(OH)2(s) precipitate hydrogen gas H2(g) Use a flaming splint metal (active) React with a strong acid water H2O(ℓ) Use blue cobalt chloride paper a popping sound (like uncorking a champagne bottle) because the dihydrogen gas ignites in the presence of atmospheric dioxygen gas (O2(g)) bubbles filled with hydrogen gas. Often the un-reacted metal will darken in color. the blue color of a chemically treated paper to change to a pinkish/white color Arrhenius acid Test with various indicators a color change in selected indicators (cross reference with Table M) Arrhenius base Test with various indicators a color change in selected indicators (cross reference with Table M) carbonate anion React with an acid fizzing due to bubbles of carbon dioxide gas monosaccharides (reducing sugar) Perform Tollens’ test using the precipitation/deposition of silver metal on glass Ag(NH3)2+1(aq) + KOH(aq) + reducing sugar Not all monosaccharides are reducing sugars. Fructose, is a structural isomer of glucose, but fructose is not a reducing sugar. monosaccharides (reducing sugar) Test with Benedict’s Solution the color of the Benedict’s solution to change from blue to yellow or red due to a reduction in the Cu2+ to Cu1+. Electrons are gained from the oxidized sugar (reducing sugar). This test works well for many aldehydes and a few alphahydroxy-ketones [where a hydroxyl group is adjacent to the keto or carbonyl group, called acyloins ] polysaccharides (starch) React with a solution of iodine the color to change from red to blue/black by slightly altering the molecular configurations of amylose (blue) and amylopectin (black) protein Use Biuret Test a color change from blue to violet in the presence of proteins or blue to pink in the presence of small polypeptides due to Co2+ forming coordination compounds in basic solution (metal hydroxide or ammonia H2O)