Question 1

Which of the following best describes cyclohexane in the chair conformation?

Accepted Answer

A)  It contains torsional strain.
B)  It contains angle strain.
C)  It contains both torsional and angle strain.
D)  It contains neither torsional nor angle strain.

Question 2

The interpenetration of electron clouds from nearby substituents is a result of torsional strain.

Accepted Answer

A) True 
 B)False

Question 3

Draw the ring flip of the following molecule,shown below.

Accepted Answer

The ring f...

Question 4

Which of the following represents the most stable conformation of cis-1-bromo-2-chlorocyclohexane?

Accepted Answer

A)   
B)   
C)   
D)

Question 5

Which of the following conformations of cyclohexane is highest in energy?

Accepted Answer

A)  chair
B)  half-chair
C)  boat
D)  twist-boat

Question 6

Which of the following represents the most stable chair conformation of the molecule shown below?

Accepted Answer

A)   
B)   
C)   
D)

Question 7

The interpenetration of electron clouds from nearby substituents is a result of_______________ strain.

Accepted Answer

The answer of The interpenetration of electron clouds from nearby...

Question 8

A cyclohexane twist-boat conformation is more strained than the boat conformation.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following represents the Newman projection shown below?

Accepted Answer

A)   
B)   
C)   
D)

Question 10

Cyclobutane rings adopt an envelope conformation.

Accepted Answer

A) True 
 B)False

Question 11

What is the optimal dihedral angle between substituents of a Newman projection in a staggered conformation?

Accepted Answer

A)  15°
B)  30°
C)  60°
D)  90°

Question 12

Molecules that exist in different conformations are called _______________ .

Accepted Answer

The answer of Molecules that exist in different conformations are...

Question 13

Which of the following molecules has two equally stable chair conformations?

Accepted Answer

A)  trans-1,4-dimethylcyclohexane
B)  cis-1,4-dimethylcyclohexane
C)  trans-1-ethyl-4-methylcyclohexane
D)  cis-1-ethyl-4-methylcyclohexane

Question 14

Convert the following Newman projection into both the possible chair conformations and the line-bond structure

Accepted Answer

The chair structure ...

Question 15

Cyclopentane rings adopt a boat conformation.

Accepted Answer

A) True 
 B)False

Question 16

Axial substituents in a chair conformation experience steric strain through 1,2-diaxial interactions

Accepted Answer

A) True 
 B)False

Question 17

The difference in energy between two chair conformations is referred to as an _______________.

Accepted Answer

The answer of The difference in energy between two chair...

Question 18

Which of the following represents a conformation of the molecule shown below?

Accepted Answer

A)   
B)   
C)   
D)

Question 19

Which of the following best describes the molecule shown below?

Accepted Answer

A)  Both bromo and chloro are axial.
B)  Both bromo and chloro are equatorial.
C)  Bromo is axial and chloro is equatorial.
D)  Bromo is equatorial and chloro is axial.

Question 20

Which of the following is a Newman conformation of the structure shown below?

Accepted Answer

A)   
B)   
C)   
D)

Exam 3: Molecules in Motion: Conformations by Rotation

Which of the following conformations of cyclohexane is highest in energy?

Correct AnswerverifiedShow Answer

The difference in energy between two chair conformations is referred to as an _______________.

Correct AnswerverifiedShow Answer

Which of the following represents a conformation of the molecule shown below?

Correct AnswerverifiedShow Answer

What is the optimal dihedral angle between substituents of a Newman projection in a staggered conformation?

Correct AnswerverifiedShow Answer

Cyclobutane rings adopt an envelope conformation.

Correct AnswerverifiedShow Answer

Which of the following best describes the molecule shown below?

Correct AnswerverifiedShow Answer

Molecules that exist in different conformations are called _______________ .

Correct AnswerverifiedShow Answer

The interpenetration of electron clouds from nearby substituents is a result of torsional strain.

Correct AnswerverifiedShow Answer

Which of the following is a Newman conformation of the structure shown below?

Correct AnswerverifiedShow Answer

Which of the following represents the most stable conformation of cis-1-bromo-2-chlorocyclohexane?

Correct AnswerverifiedShow Answer

Which of the following represents the most stable chair conformation of the molecule shown below?

Correct AnswerverifiedShow Answer

Which of the following best describes cyclohexane in the chair conformation?

Correct AnswerverifiedShow Answer

Which of the following represents the Newman projection shown below?

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A cyclohexane twist-boat conformation is more strained than the boat conformation.

Correct AnswerverifiedShow Answer

Convert the following Newman projection into both the possible chair conformations and the line-bond structure

Correct AnswerverifiedThe chair structure ...View AnswerShow Answer

Axial substituents in a chair conformation experience steric strain through 1,2-diaxial interactions

Correct AnswerverifiedShow Answer

The interpenetration of electron clouds from nearby substituents is a result of_______________ strain.

Correct AnswerverifiedShow Answer

Which of the following molecules has two equally stable chair conformations?

Correct AnswerverifiedShow Answer

Cyclopentane rings adopt a boat conformation.

Correct AnswerverifiedShow Answer

Draw the ring flip of the following molecule,shown below.

Correct AnswerverifiedThe ring f...View AnswerShow Answer

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The chair structure ...
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The ring f...
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