Question 1

Which of the following describes the compound below?

Accepted Answer

A)   bridged bicyclic
B)   fused bicyclic
C)   spiro bicyclic
D)   bridged tricyclicE) A) and C)
F) B) and C)

Question 2

Provide the IUPAC name of (CH3CH2)3CH.

Accepted Answer

Question 3

Provide an acceptable name for the alkane shown below.
CH3CH2CH2CH2CH2CH3

Accepted Answer

Question 4

Draw the most stable conformation of cis-1-t-butyl-4-methylcyclohexane.

Accepted Answer

The answer of Draw the most stable conformation of cis-1-t-butyl-4-methylcyclohexane....

Question 5

Provide an acceptable name for the alkane shown below.

Accepted Answer

6-ethyl-2-...

Question 6

Draw isopropylcyclohexane in a chair conformation and then draw its ring flipped isomer. Label the substituent as either axial or equitorial. Indicate which of the conformers is more stable.

Accepted Answer

The answer of Draw isopropylcyclohexane in a chair conformation and...

Question 7

Draw the Newman projection of the highest energy conformation that results from rotation about the C2-C3 bond of 2,2-dimethylbutane.

Accepted Answer

The answer of Draw the Newman projection of the highest...

Question 8

Which of the statements below correctly describes the chair conformations of

Accepted Answer

A)   The two chair conformations are equal in energy.
B)   The higher energy chair conformation contains two axial ethyl groups.
C)   The higher energy chair conformation contains two equatorial ethyl groups.
D)   The lower energy chair conformation contains two axial ethyl groups.
E)   The lower energy chair conformation contains two equatorial ethyl groups.F) A) and C)
G) A) and E)

Question 9

When one compares the densities of n-hexane and water, one finds ________.

Accepted Answer

A)   that n-hexane is less dense than water
B)   that n-hexane is more dense than water
C)   that these two compounds have the same density
D)   that the relative densities of two immiscible compounds cannot be measuredE) C) and D)
F) A) and B)

Question 10

A branched alkane has ________ boiling point relative to the isomeric linear alkane. There are ________ London force interactions in the branched alkane.

Accepted Answer

A)   a higher; stronger
B)   a higher; weaker
C)   a lower, stronger
D)   a lower; weaker
E)   the same; similarF) A) and B)
G) A) and C)

Question 11

Define the term conformation.

Accepted Answer

Conformations are different ar...

Question 12

Which alkanes have largely replaced Freons as propellants in aerosol cans?

Accepted Answer

A)   methane and ethane
B)   propane and butane
C)   pentane and hexane
D)   nonane and decane
E)   none of the aboveF) B) and E)
G) B) and C)

Question 13

List three commercial products which are composed primarily of alkanes.

Accepted Answer

natural gas, gasoline, kerosen...

Question 14

Draw an acceptable structure for 1-ethyl-2-(2,2-dimethylpentyl)cyclopentane.

Accepted Answer

The answer of Draw an acceptable structure for 1-ethyl-2-(2,2-dimethylpentyl)cyclopentane....

Question 15

From the perspective of viewing down the C2-C3 bond, draw the Newman projection of the least stable conformation of 2,3-dimethylbutane.

Accepted Answer

The answer of From the perspective of viewing down the...

Question 16

How many secondary (2°)  carbons are found in 5-ethyl-3,3,4-trimethylheptane?

Accepted Answer

A)   1
B)   4
C)   2
D)   3
E)   6F) D) and E)
G) A) and B)

Question 17

Identify the correct IUPAC name for the structure shown below.

Accepted Answer

A)   1-tert-butyl-2-chloro-5-bromocycloheptane
B)   5-bromo-1-tert-butyl-2-chlorocycloheptane
C)   1-bromo-4-chloro-5-tertbutylcycloheptane
D)   1-bromo-4-tert-butyl-5-chlorocycloheptane
E)   1-tert-butyl-4-bromo-7-chlorocycloheptaneF) B) and D)
G) A) and E)

Question 18

Which line-angle formula corresponds to the chair conformation shown below?

Accepted Answer

A)   I
B)   II
C)   III
D)   IVE) All of the above
F) B) and C)

Question 19

Give the IUPAC name for the cycloalkane shown below.

Accepted Answer

trans-1-et...

Question 20

A series of compounds, like the n-alkanes, that differ only by the number of  
groups, is called a(n) ________ series.

Accepted Answer

The answer of A series of compounds, like the n-alkanes,...

Exam 3: Structure and Stereochemistry of Alkanes

Provide an acceptable name for the alkane shown below. CH3CH2CH2CH2CH2CH3

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From the perspective of viewing down the C2-C3 bond, draw the Newman projection of the least stable conformation of 2,3-dimethylbutane.

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Identify the correct IUPAC name for the structure shown below.

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A series of compounds, like the n-alkanes, that differ only by the number of groups, is called a(n) ________ series.

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Draw isopropylcyclohexane in a chair conformation and then draw its ring flipped isomer. Label the substituent as either axial or equitorial. Indicate which of the conformers is more stable.

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When one compares the densities of n-hexane and water, one finds ________.

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Provide an acceptable name for the alkane shown below.

Correct Answerverified6-ethyl-2-...View AnswerShow Answer

A branched alkane has ________ boiling point relative to the isomeric linear alkane. There are ________ London force interactions in the branched alkane.

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Draw an acceptable structure for 1-ethyl-2-(2,2-dimethylpentyl)cyclopentane.

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Draw the most stable conformation of cis-1-t-butyl-4-methylcyclohexane.

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Which alkanes have largely replaced Freons as propellants in aerosol cans?

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Give the IUPAC name for the cycloalkane shown below.

Correct Answerverifiedtrans-1-et...View AnswerShow Answer

Which line-angle formula corresponds to the chair conformation shown below?

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Draw the Newman projection of the highest energy conformation that results from rotation about the C2-C3 bond of 2,2-dimethylbutane.

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List three commercial products which are composed primarily of alkanes.

Correct Answerverifiednatural gas, gasoline, kerosen...View AnswerShow Answer

Which of the statements below correctly describes the chair conformations of

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Which of the following describes the compound below?

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Provide the IUPAC name of (CH3CH2)3CH.

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How many secondary (2°) carbons are found in 5-ethyl-3,3,4-trimethylheptane?

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Define the term conformation.

Correct AnswerverifiedConformations are different ar...View AnswerShow Answer

Provide an acceptable name for the alkane shown below. CH₃CH₂CH₂CH₂CH₂CH₃

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6-ethyl-2-...
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A branched alkane has boiling point relative to the isomeric linear alkane. There are London force interactions in the branched alkane.

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trans-1-et...
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natural gas, gasoline, kerosen...
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Provide the IUPAC name of (CH₃CH₂)₃CH.

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Conformations are different ar...
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