Organic Chemistry, 7e (Wade)
Chapter 3 Structure and Stereochemistry of Alkanes
1) Which of the statements below accurately describe(s) alkanes?
A) Alkanes are hydrocarbons which contain only single bonds.
B) Alkanes belong to the class of unsaturated hydrocarbons.
C) Alkanes are the simplest and least reactive class of organic compounds.
D) both A and B
E) both A and C
Answer: E
Diff: 1
Section: 3.1
2) Which of the following types of hydrocarbons is(are) saturated?
A) alkanes
B) alkenes
C) alkynes
D) aromatics
E) All of the above are saturated.
Answer: A
Diff: 1
Section: 3.1
3) If a hydrocarbon has no double or triple bonds, it is said to be __________.
Answer: saturated
Diff: 1
Section: 3.1
4) Straight-chain alkanes are also called __________.
Answer: n-alkanes
Diff: 2
Section: 3.1
5) If an acyclic alkane hydrocarbon contains n carbon atoms, how many hydrogen atoms must it
also contain?
A) n
B) 2n
C) n + 2
D) 2n + 2
E) n - 2
Answer: D
Diff: 2
Section: 3.2
1
,6) Triacontane is an unbranched alkane that contains 30 carbon atoms in each molecule. How
many hydrogen atoms are present in each molecule of triacontane?
A) 30
B) 32
C) 58
D) 60
E) 62
Answer: E
Diff: 3
Section: 3.2
7) A series of compounds, like the n-alkanes, that differ only by the number of –CH2– groups, is
called a(n) __________ series.
Answer: homologous
Diff: 2
Section: 3.2
8) How many secondary (2°) carbons are found in 5-ethyl-3,3,4-trimethylheptane?
A) 1
B) 4
C) 2
D) 3
E) 6
Answer: D
Diff: 1
Section: 3.3
9) Identify the correct IUPAC name for the following structure.
A) 6-bromo-1-cyclopentyl-3,6-dimethylhexane
B) 1-bromo-5-cyclopentyl-1,4-dimethylpentane
C) 2-bromo-6-cyclopentyl-5-methylhexane
D) 5-bromo-1-cyclopentyl-2-methylhexane
E) none of the above
Answer: D
Diff: 3
Section: 3.3
2
, 10) Identify the correct IUPAC name for each compound shown below.
A) 2-bromo-3-sec-butyl-4-ethylhexane
B) 2-bromo-4-ethyl-3-sec-butylhexane
C) 3-(1-bromoethyl)-2,4-diethylhexane
D) 4-(1-bromoethyl)-3-ethyl-5-methylheptane
E) 4-(1-bromoethyl)-5-ethyl-3-methylheptane
Answer: D
Diff: 3
Section: 3.3
11) Provide an acceptable name for (CH3CH2CH2)3CH.
Answer: 4-propylheptane
Diff: 1
Section: 3.3
12) Provide the name of the compound below.
Answer: 3-fluoro-2,2-dimethylhexane
Diff: 1
Section: 3.3
13) Provide the name of the compound below.
Answer: 2,3,6,7-tetramethylnonane
Diff: 1
Section: 3.3
3
Chapter 3 Structure and Stereochemistry of Alkanes
1) Which of the statements below accurately describe(s) alkanes?
A) Alkanes are hydrocarbons which contain only single bonds.
B) Alkanes belong to the class of unsaturated hydrocarbons.
C) Alkanes are the simplest and least reactive class of organic compounds.
D) both A and B
E) both A and C
Answer: E
Diff: 1
Section: 3.1
2) Which of the following types of hydrocarbons is(are) saturated?
A) alkanes
B) alkenes
C) alkynes
D) aromatics
E) All of the above are saturated.
Answer: A
Diff: 1
Section: 3.1
3) If a hydrocarbon has no double or triple bonds, it is said to be __________.
Answer: saturated
Diff: 1
Section: 3.1
4) Straight-chain alkanes are also called __________.
Answer: n-alkanes
Diff: 2
Section: 3.1
5) If an acyclic alkane hydrocarbon contains n carbon atoms, how many hydrogen atoms must it
also contain?
A) n
B) 2n
C) n + 2
D) 2n + 2
E) n - 2
Answer: D
Diff: 2
Section: 3.2
1
,6) Triacontane is an unbranched alkane that contains 30 carbon atoms in each molecule. How
many hydrogen atoms are present in each molecule of triacontane?
A) 30
B) 32
C) 58
D) 60
E) 62
Answer: E
Diff: 3
Section: 3.2
7) A series of compounds, like the n-alkanes, that differ only by the number of –CH2– groups, is
called a(n) __________ series.
Answer: homologous
Diff: 2
Section: 3.2
8) How many secondary (2°) carbons are found in 5-ethyl-3,3,4-trimethylheptane?
A) 1
B) 4
C) 2
D) 3
E) 6
Answer: D
Diff: 1
Section: 3.3
9) Identify the correct IUPAC name for the following structure.
A) 6-bromo-1-cyclopentyl-3,6-dimethylhexane
B) 1-bromo-5-cyclopentyl-1,4-dimethylpentane
C) 2-bromo-6-cyclopentyl-5-methylhexane
D) 5-bromo-1-cyclopentyl-2-methylhexane
E) none of the above
Answer: D
Diff: 3
Section: 3.3
2
, 10) Identify the correct IUPAC name for each compound shown below.
A) 2-bromo-3-sec-butyl-4-ethylhexane
B) 2-bromo-4-ethyl-3-sec-butylhexane
C) 3-(1-bromoethyl)-2,4-diethylhexane
D) 4-(1-bromoethyl)-3-ethyl-5-methylheptane
E) 4-(1-bromoethyl)-5-ethyl-3-methylheptane
Answer: D
Diff: 3
Section: 3.3
11) Provide an acceptable name for (CH3CH2CH2)3CH.
Answer: 4-propylheptane
Diff: 1
Section: 3.3
12) Provide the name of the compound below.
Answer: 3-fluoro-2,2-dimethylhexane
Diff: 1
Section: 3.3
13) Provide the name of the compound below.
Answer: 2,3,6,7-tetramethylnonane
Diff: 1
Section: 3.3
3
