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Chemistry: A Molecular Approach, 2e (Tro)
Chapter 20 Organic Chemistry
Multiple Choice Questions
1) Give the number of covalent bonds that a carbon atom can form.
A) 1
B) 2
C) 3
D) 4
E) 5
2) Identify the formula for an alkene.
A) CnH2n+2
B) CnH2n-2
C) CnH2n
D) CnH2n-4
E) CnH2n+4
3) Identify the formula for an alkane.
A) CnH2n+2
B) CnH2n-2
C) CnH2n
D) CnH2n-4
E) CnH2n+4
4) Identify the formula for an alkyne.
A) CnH2n+2
B) CnH2n-2
C) CnH2n
D) CnH2n-4
E) CnH2n+4
5) Nonsuperimposable mirror images are called ________.
A) structural isomers
B) achiral
C) diastereomers
D) enantiomers
E) racemic mixture
6) Molecules with the same formula but different structures are called ________.
A) structural isomers
B) achiral
C) diastereomers
D) enantiomers
E) racemic mixture
7) An equimolar mixture of two optical isomers is called a ________.
A) structural isomer
B) achiral
C) diastereomer
D) enantiomer
E) racemic mixture
8) How many of the carbons in the following compound are chiral center(s)?
A) 0
B) 1
C) 2
D) 3
E) 4 or more
9) How many of the carbons in the following compound are chiral center(s)?
A) 0
B) 1
C) 2
D) 3
E) 4 or more
10) Name the following compound.
A) 3-ethyl-3-methylhexane
B) 3-methyl-3-propylpentane
C) 3-ethyl-3-propylbutane
D) nonane
E) 2-ethylheptane
11) Name the following compound.
A) 4-methyl-4-propylpentane
B) 4,4-dimethylheptane
C) nonane
D) 4-propyl-4-methylpentane
E) 2-methyl-2-propylpentane
12) Name the following compound.
A) 2-methyl-3-methylhexane
B) heptane
C) 2,3-dimethylpentane
D) 3,4-dimethylpentane
E) 2,4-dimethylpropane
13) Which of the following names are correct?
A) 3-butyl-4-pentene
B) 3-ethyl-1-heptene
C) 3-etheneheptane
D) 5-ethyl-6-heptene
E) All of the above are correct.
14) Name the following compound.
A) 3-methyl-1-pentyne
B) 3-methyl-4-pentyne
C) 2-ethynebutane
D) 1-hexyne
E) 3-ethyl-1-butyne
15) Name the following compound.
A) 4-propyl-5-hexyne
B) 3-isopropyl-1-hexyne
C) 1-nonyne
D) 4-methyl-3-propyl-1-pentyne
E) 2-methyl-4-pentyne
16) Name the following compound.
A) 3-butyl-3-propyl-1-pentyne
B) 3-butyl-3-propyl-4-pentyne
C) 3-ethyl-3-propyl-1-heptyne
D) 5-ethyl-5-propyl-6-heptyne
E) 3-ethyl-3-butyl-1-hexyne
17) Which of the following names are correct?
A) 2-methyl-4-pentyne
B) 3-ethyl-1-butyne
C) 3-butyl-3-propyl-1-pentyne
D) 3-methyl-1-butyne
E) 3-ethyl-3-butyl-1-hexyne
18) Which of the following names are correct?
A) 3-methyl-5-heptyne
B) 2-ethyl-4-hexyne
C) 5-ethyl-2-hexyne
D) 4-butyl-1-pentyne
E) 5-methyl-2-heptyne
19) Which of the following compounds exhibit geometric isomerism?
A) CH2=CH-CH3
B) CCl2=CBr2
C) CH3-CH=CH-CH3
D) CCl2=CHBr
E) All of the above exhibit geometric isomerism.
20) Which of the following compounds exhibit geometric isomerism?
A) CH2=CH2
B) CH2=CCl2
C) CBr2=CHBr
D) CHCl=CHCl
E) (CH3)2C=CH-CH3
21) Write a balanced chemical reaction to represent the combustion of 2,2-dimethylpropane.
A) C5H12 + 8 O2 → 5 CO2 + 6 H2O
B) C3H8 + 5 O2 → 3 CO2 + 4 H2O
C) C5H12 + H2 → CH4 + 2 C2H6
D) C3H8 + H2 → CH4 + C2H6
E) 2 C3H8 + O2 → 3 CH4 + 2 H2O
22) Write a balanced chemical equation to represent the reaction of 3-ethyl-2-methylhexane with Br2.
A) C7H14 + Br2 → C7H12Br + HBr
B) C9H20 + Br2 → C9H19Br + HBr
C) C6H12 + Br2 → C6H10Br2 + H2
D) C9H18 + Br2 → C9H16Br2 + H2
E) C6H12 + Br2 → C6H11Br + HBr
23) Write the balanced chemical equation that represents the addition of Cl2 to CH3CH=CH2.
A) CH3CH=CH2 + Cl2 → CH3CHClCH3 + HCl
B) CH3CH=CH2 + Cl2 → CH3CCl=CHCl + H2
C) CH3CH=CH2 + Cl2 → CH3CHClCH2Cl
D) CH3CH=CH2 + 2 Cl2 → CH3CHCl2 + CH2Cl2
E) CH3CH=CH2 + 2 Cl2 → CH3CCl2CHCl2 + H2
24) Write the balanced chemical equation for the addition of 2 Br2 to CH3C≡CH.
A) CH3C≡CH + 2 Br2 → CH3CBr2CHBr2
B) CH3C≡CH + 2 Br2 → CH3CBr=CHBr
C) CH3C≡CH + 2 Br2 → CH3CH2CHBr2
D) CH3C≡CH + 2 Br2 → CH3CBr2CH3
E) CH3C≡CH + 2 Br2 → CH3CHBrCH2Br
25) Complete and balance the following addition reaction.
CH3C≡CCH3 + 2 Cl2 → ?
A) CH3C≡CCH3 + 2 Cl2 → CH3CCl2CCl2CH3
B) CH3C≡CCH3 + 3 Cl2 → 2 CH3CCl3
C) CH3C≡CCH3 + 2 Cl2 → 4 CH3Cl
D) CH3C≡CCH3 + 4 Cl2 → 4 CH2Cl2
E) CH3C≡CCH3 + Cl2 → CH3CHClCHClCH3
26) Write the balanced chemical equation for the catalytic hydrogenation (addition of H2) to
CH3CH=CHCH3.
A) CH3CH=CHCH3 + 2 H2 → 2 CH3CH3
B) CH3CH=CHCH3 + 3 H2 → CH3CH3 + 2 CH4
C) CH3CH=CHCH3 + 2 H2 → CH3CH2CH3 + CH4
D) CH3CH=CHCH3 + H2 → CH3CH2CH2CH3
E) CH3CH=CHCH3 + 4 H2 → 4 CH4
27) Write the balanced chemical equation for the catalytic hydrogenation (addition of H2) to
CH3C≡CH.
A) CH3C≡CH + H2 → CH3CH=CH2
B) CH3C≡CH + 2 H2 → CH3CH=CH2
C) CH3C≡CH + H2 → CH3CH2CH3
D) CH3C≡CH + 2 H2 → CH3CH2CH3
E) CH3C≡CH + H2 → CH2=C=CH2
8
28) Complete and balance the following complete hydrogenation reaction.
CH3CH2C≡CCH3 + 2 H2 → ?
A) CH3CH2C≡CCH3 + 3 H2 → CH3CH2CH3 + CH3CH3
B) CH3CH2C≡CCH3 + 2 H2 → CH3CH2CH2CH2CH3
C) CH3CH2C≡CCH3 + 6 H2 → 5 CH4
D) 2 CH3CH2C≡CCH3 + 2 H2 → CH3CH2CH2CH2CH2CH2CH2CH2CH2CH3
E) CH3CH2C≡CCH3 + 2 H2 → CH3CH2CH2CH2CH3
29) Write the balanced chemical equation for the addition of HBr to CH2=CHCH2CH3.
A) CH2=CHCH2CH3 + HBr → CH3BrCH2CH2CH3
B) CH2=CHCH2CH3 + 2 HBr → 2 CH2BrCH3
C) CH2=CHCH2CH3 + 2 HBr → CH3Br + CH2BrCH2CH3
D) CH2=CHCH2CH3 + 4 HBr → 4 CH3Br
E) CH2=CHCH2CH3 + HBr → CH3CHBrCH2CH3
30) Name the following compound.
A) 2,5-dibromobenzene
B) 2,5-dibromocyclohexene
C) 1,4-dibromobenzene
D) 1,4-bromocyclohexene
E) 3,6-dibromobenzene
31) Name the following compound.
A) o-dibromobenzene
B) m-dibromobenzene
C) p-dibromobenzene
D) p-bromobenzene
E) none of the above
32) Name the following compound.
A) 2,3,5-trichlorobenzene
B) 1,3,4-trichlorobenzene
C) trichlorostyrene
D) 1,2,4-trichlorobenzene
E) 1,3,4-trichlorohexene
33) Which of the following compounds is an alcohol?
A) CH3CH2CH2CO2H
B) CH3-O-CH3
C) CH3CO2CH3
D) CH3CH2CH=O
E) CH2OH-CH2OH
34) Which of the following compounds is an aldehyde?
A) CH3CH2CH=O
B) CH3CH2CH2CO2H
C) CH3CO2CH3
D) CH3-O-CH3
E) CH2OH-CH2OH
35) Which of the following compounds is an ketone?
A) CH3CH2CH2CO2H
B)
C) CH3CH2NH2
D)
E)
36) Which of the following compounds is an carboxylic acid?
A)
B)
C)
D)
E)
11
37) Which of the following compounds is an ester?
A)
B)
C)
D)
E)
38) Which of the following compounds is an ether?
A)
B)
C)
D)
E)
39) Which of the following compounds is ethanol?
A) C2H6
B) C2H5OH
C) CH3CO2H
D) CH3CO2CH3
E) CH3-O-CH3
40) Arrange the following in order from most oxidized to least oxidized.
A) II > I > III
B) III > II > I
C) III > I > III
D) I > II > III
E) II > I > III
41) Arrange the following in order from least oxidized to most oxidized.
A) II < I < III
B) III < I = II
C) III < I < II
D) I < II < III
E) I < III < II
42) Identify the most oxidized compound.
A) CH3CH2COOH
B) CH3CH2CHO
C) CH3CH2CH3
D) CH3CH2OCH3
E) CH3CH2CH2OH
43) Determine the products of the following reaction:
A)
B)
C)
D)
E)
44) Give the product for the dehydration of CH3CH2CH2OH.
A) CH3CH2CH2OCH2CH2CH3
B) CH3CH=CH2
C) CH3CH=CHCH3
D) CH3CH2CH=CH2
E) CH2=C=CH2
45) Determine the products of the following reaction:
A)
B)
C)
D)
E)
46) Determine the products of the following reaction:
A)
B)
C)
D)
E)
