Question 1

Draw the most stable conformation of cis-1-ethyl-3-methylcyclohexane.

Accepted Answer

The answer of Draw the most stable conformation of cis-1-ethyl-3-methylcyclohexane....

Question 2

Draw the most stable conformation of cis-1-ethyl-4-isopropylcyclohexane.

Accepted Answer

The answer of Draw the most stable conformation of cis-1-ethyl-4-isopropylcyclohexane....

Question 3

Draw a Newman Projection along the C3-C4 for the molecule shown below. (C3 should be in front.)

Accepted Answer

The answer of Draw a Newman Projection along the C3-C4...

Question 4

Which of the following correctly lists the conformations of cis-1,4-di-t-butylcylcohexane in order of increasing energy?

Accepted Answer

A)   chair 
B)   twist boat 
C)   chair 
D)   boat 
E)   half-chair < chair < boat < twisted boat

Question 5

Identify the correct IUPAC name for each compound shown below.

Accepted Answer

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

Question 6

Identify the correct IUPAC name for the following structures.

Accepted Answer

A)   4-(2-iodo-1-methylethyl) -3-methylheptane
B)   3-s-butyl-1-iodo-2-methylhexane
C)   1-iodo-2,4-dimethyl-3-propylhexane
D)   2,4-dimethyl-1-iodo-3-propylhexane

Question 7

________ is the reaction process through which long-chain alkanes are converted into a mixture of short-chain alkanes and alkenes.

Accepted Answer

The answer of ________ is the reaction process through which...

Question 8

Provide the name of the compound below.

Accepted Answer

2,3,6,7-te...

Question 9

Name the following compound and use the appropriate cis/trans designation.

Accepted Answer

trans - 1-...

Question 10

Provide an acceptable name for the alkane shown below.

Accepted Answer

3-ethyl-4,...

Question 11

Which line angle drawing best represents the Newman Projection shown below?

Accepted Answer

A)   
B)   
C)   
D)

Question 12

Draw the chair conformer of cyclohexane. Label the axial hydrogens (Ha) and the equatorial hydrogens (He).

Accepted Answer

Question 13

Without any change in conformation, translate the Newman projection shown below to a perspective structure.

Accepted Answer

The answer of Without any change in conformation, translate the...

Question 14

Which of the following statements is a correct description of the most stable conformation of 1,1,3-trimethylcyclohexane?

Accepted Answer

A)   The methyl group at C-3 is equatorial.
B)   C-1 is a tertiary carbon and C-3 is a primary carbon.
C)   C-1 is a quaternary carbon and C-3 is a secondary carbon.
D)   C-1 is a tertiary carbon and C-3 is a secondary carbon.
E)   Both methyl groups at C-1 are equatorial.

Question 15

Which of the following is a bridged bicyclic alkane?

Accepted Answer

A)   cis-decalin
B)   bicyclo[2.2.1]heptane
C)   bicyclo[3.2.0]heptane
D)   bicyclo[4.1.0]heptane
E)   none of the above

Question 16

How many methyl groups are present in 2,4-dimethylhexane?

Accepted Answer

A)   0
B)   2
C)   4
D)   6
E)   8

Question 17

Why are alkanes described as hydrophobic?

Accepted Answer

Alkanes are nonpolar...

Question 18

By using the appropriate molecular formulas, write a balanced equation which describes the complete combustion of cyclohexane.

Accepted Answer

C₆H₁₂ + 9 O₂ →...

Question 19

Which of the following correctly ranks the cycloalkanes in order of increasing ring strain per methylene?

Accepted Answer

A)   cyclopropane 
B)   cyclohexane 
C)   cyclohexane 
D)   cyclopentane 
E)   cyclopropane < cyclopentane < cyclobutane < cyclohexane

Question 20

Which of the following types of hydrocarbons is(are)  saturated?

Accepted Answer

A)   alkanes
B)   alkenes
C)   alkynes
D)   aromatics
E)   All of the above are saturated.

Exam 3: Structure and Stereochemistry of Alkanes

Draw the most stable conformation of cis-1-ethyl-3-methylcyclohexane.

Correct AnswerverifiedShow Answer

By using the appropriate molecular formulas, write a balanced equation which describes the complete combustion of cyclohexane.

Correct AnswerverifiedC6H12 + 9 O2 →...View AnswerShow Answer

Without any change in conformation, translate the Newman projection shown below to a perspective structure.

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Which of the following correctly lists the conformations of cis-1,4-di-t-butylcylcohexane in order of increasing energy?

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Draw the most stable conformation of cis-1-ethyl-4-isopropylcyclohexane.

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Identify the correct IUPAC name for the following structures.

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Draw a Newman Projection along the C3-C4 for the molecule shown below. (C3 should be in front.)

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Provide the name of the compound below.

Correct Answerverified2,3,6,7-te...View AnswerShow Answer

Which line angle drawing best represents the Newman Projection shown below?

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Why are alkanes described as hydrophobic?

Correct AnswerverifiedAlkanes are nonpolar...View AnswerShow Answer

How many methyl groups are present in 2,4-dimethylhexane?

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Identify the correct IUPAC name for each compound shown below.

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Name the following compound and use the appropriate cis/trans designation.

Correct Answerverifiedtrans - 1-...View AnswerShow Answer

Which of the following is a bridged bicyclic alkane?

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Which of the following types of hydrocarbons is(are) saturated?

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Which of the following statements is a correct description of the most stable conformation of 1,1,3-trimethylcyclohexane?

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Which of the following correctly ranks the cycloalkanes in order of increasing ring strain per methylene?

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Provide an acceptable name for the alkane shown below.

Correct Answerverified3-ethyl-4,...View AnswerShow Answer

Draw the chair conformer of cyclohexane. Label the axial hydrogens (Ha) and the equatorial hydrogens (He).

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________ is the reaction process through which long-chain alkanes are converted into a mixture of short-chain alkanes and alkenes.

Correct AnswerverifiedShow Answer

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C₆H₁₂ + 9 O₂ →...
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2,3,6,7-te...
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Alkanes are nonpolar...
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trans - 1-...
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3-ethyl-4,...
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Draw the chair conformer of cyclohexane. Label the axial hydrogens (H_a) and the equatorial hydrogens (H_e).

Correct Answer
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Correct Answer
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