Organic Chemistry Test Grade 12 Chemistry
K
13
T
7
C
20
A
Assessment of Learning (Product)
4
True/False (3K)
Indicate whether the sentence or statement is true or false.
____
1.
The characteristic tastes and smells of many fruits come from ethers.
____
2.
Ethanamide has higher solubility in water than N,N-diethylbutanamide..
____
3.
1-propanamine has a lower melting point than N,N-dimethyl ethanamine.
____
4.
As the chain length of an aldehyde decreases, its odour becomes more pleasant.
____
5.
Alcohols and esters are flammable.
____
6.
All amines can hydrogen bond with water.
Multiple Choice (10K)
Identify the letter of the choice that best completes the statement or answers the question.
1. Which molecule below is most likely a gas at room temperature?
O
a.
CH2
C
CH2
O
b.
CH3
C
OH
O
c.
CH3
C
NH2
O
d.
CH3
OH
C
O
e.
H
C
H
2.
a.
b.
c.
Of the following organic compounds, which is least soluble in water at room temperature?
methanol
d. ethanediol
ethanol
e. ethanoic acid
methoxy ethane
3. The correct name for the compound given is:
a.
b.
c.
d.
e.
2-methyl-1-butene
pentene
2-ethyl-1-propene
3-methyl-2-butene
2-ethyl-1-pentene
4. The correct IUPAC name for the compound below is which of the following?
a. 5-ol-2-ethylpentane ether
b. 2-ethoxy-5-pentanone
c. 3-propoxypentanal
d. 4-ethoxypentanal
5. The correct name for the compound given below is which of the following?
a. 2-cycloproproxylcyclobutane
b. cyclobutylpropoxy ether
6.
c. 2-cyclobutoxycyclopropane
d. cyclopropoxycyclobutane
The alcohol below is classified as which of the following?
CH2CH(OH)CH3
a. primary alcohol
b. secondary alcohol
c. tertiary alcohol
d. aromatic alcohol
7. The prefix “para” refers to substituents on a benzene ring that are on carbons
a. One and two
c. One and four
b. One and three
d. One and five
8. Which of the following alkanes would have the highest boiling point?
a. C4H10
c. CH4
b. C8H18
d. C15H32
9. Which of the following compounds is unable to have hydrogen bond interactions with itself?
a. CH3CH2COOH
d. CH3C(CH3)2CH2OH
b. CH3COCH2CH3
e. CH3CH2NHCH3
c. CH3CONH2
10. Identify the set of compounds that have the same functional group.
a. CH3OH, H3CCH(OH)CH3,
d. CH3COCH3, CH3COOH,
CH3(CH2)3CH2OH
CH3CH2CHO
b. CH3OCH3, CH3COCH3,
e. C6H14, C6H12, C6H6
CH3COCH2CH3
c. CH3NH2, CH3CONH2,
CH3CH2CONH2
Short Answer:
1. Circle and name the functional groups in the following molecules (not including benzene group): (4C)
O
CH3O
HO
a.
O
O
OCH3
O
NH
CH2
C
OH
b.
O
2. Draw line structures for the following compounds: (7C)
Compound
2,3-diethyl–1–nonanol
Line Structure
1−chloro−3−methyl−2−hexene
1−phenylheptyne
2−pentyl
2,3−diisopropyloctanoate
Butenedioic acid
chloromethanal
3-tertbutoxy−2−decanone
3. Name the following structures. (9C)
O
H
N
N
a.
b.
OH
OH
O
CH2
c.
OH
d. CH2
CH
O
C
CH3
O
e.
f.
4. a. Explain the fact that pyridine,
,
is completely miscible (soluble) in water, while benzene is only slightly soluble in water. Include a
structure for benzene. (2A)
b. Which compound would you expect to have the higher boiling point? Explain briefly? (2A)
5. a. Draw the condensed or line structure and provide the IUPAC name of the ether with the formula
C2H6O. (2T)
b. Which common organic compound, belonging to a different family, has the same formula as the ether
in part “a”? (1T)
c. List two differences in properties between the compounds in part a and part b and explain why they
have different properties. (4T)