Question 1

Azobisisobutyronitrile (AIBN) is commonly used as a radical initiator. Draw arrows to show this process.

Accepted Answer

The answer of Azobisisobutyronitrile (AIBN) is commonly used as a...

Question 2

Identify the intermediate leads to the major product for the reaction of 2-methyl-2-butene with hydrogen bromide in the presence of peroxide.

Accepted Answer

A)   I
B)   II
C)   III
D)   IVE) B) and C)
F) A) and D)

Question 3

Which of the following are possible termination steps in the chlorination of methane?

Accepted Answer

A)   I and II
B)   III and IV
C)   I and III
D)   II and IVE) C) and D)
F) B) and D) B

Question 4

Predict the product(s)  of the following reaction.

Accepted Answer

A)   I
B)   II
C)   III
D)   I, II
E)   I, II, III, IVF) A) and D)
G) C) and E)

Question 5

Predict the major product(s)  of the following reaction.

Accepted Answer

A)   I
B)   II and IV
C)   III and V
D)   I and IV
E)   VF) B) and E)
G) B) and C)

Question 6

Draw all of the reasonable resonance structures for the radical shown below.

Accepted Answer

The answer of Draw all of the reasonable resonance structures...

Question 7

Draw the arrows to show the propagation steps in the chlorination of propane to produce 2-chloropropane.

Accepted Answer

The answer of Draw the arrows to show the propagation...

Question 8

Predict the major product(s)  of the following reaction.

Accepted Answer

A)   I
B)   I and II
C)   I, II, and III
D)   I, II, and IV
E)   IVF) All of the above
G) B) and E)

Question 9

Which of the following correctly describes the nature of the transition state of the rate-determining step of the free-radical bromination of methane?

Accepted Answer

A)   the transition state resembles the reactants more than the products
B)   the transition state resembles the products more than the reactants
C)   the transition state equally resembles products and reactantsD) B) and C)
E) A) and B)

Question 10

Identify the intermediate leads to the major product for the reaction of 2-methyl-2-butene with hydrogen bromide and hydrogen peroxide.

Accepted Answer

A)   I
B)   II
C)   III
D)   IVE) B) and C)
F) None of the above

Question 11

Which of the following is expected to be a major product for the reaction shown below?

Accepted Answer

A)   I
B)   II
C)   III
D)   IVE) A) and B)
F) B) and C)

Question 12

Give the arrows to show the propagation steps for the following reaction.

Accepted Answer

The answer of Give the arrows to show the propagation...

Question 13

Which of the following processes is responsible for the fact that free radical bromination of methane is slower than free radical chlorination?

Accepted Answer

A)   initiation
B)   hydrogen abstraction
C)   halogen abstraction
D)   termination
E)   entropyF) D) and E)
G) B) and D)

Question 14

Draw all possible monochlorination products of 3,3-dimethylpentane, including stereoisomers.

Accepted Answer

The answer of Draw all possible monochlorination products of 3,3-dimethylpentane,...

Question 15

Predict the major product of the following reaction.

Accepted Answer

A)   I
B)   II
C)   III
D)   IVE) A) and B)
F) A) and C)

Question 16

Which of the following is an example of initiation?

Accepted Answer

A)   I
B)   II
C)   III
D)   IV
E)   none of the aboveF) A) and B)
G) A) and E)

Question 17

Rank the following radicals in order of decreasing stability (most stable to least stable) .  I > II > III B)  III > I > II > IV C)  III > II > I > IV D)  III > IV > II > I E)  II > I > III > IV" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   IV > I > II > III
B)   III > I > II > IV
C)   III > II > I > IV
D)   III > IV > II > I
E)   II > I > III > IVF) A) and E)
G) None of the above

Question 18

Which of the following is expected to function as an antioxidant?

Accepted Answer

A)   I
B)   II
C)   III
D)   IV
E)   I, II, III, and IVF) B) and C)
G) A) and E)

Question 19

Identify an example of propagation.

Accepted Answer

A)   homolytic cleavage
B)   heterolytic cleavage
C)   hydrogen abstraction
D)   coupling
E)   hydrogen additionF) A) and B)
G) D) and E)

Question 20

When 2-methyl-1-propene is exposed to NBS and UV light, only one major product is obtained. How many distinct resonances in the proton-decoupled 13C NMR spectrum are observed in the product?

Accepted Answer

Exam 10: Radical Reactions

Azobisisobutyronitrile (AIBN) is commonly used as a radical initiator. Draw arrows to show this process.

Correct AnswerverifiedShow Answer

Identify the intermediate leads to the major product for the reaction of 2-methyl-2-butene with hydrogen bromide in the presence of peroxide.

Correct AnswerverifiedShow Answer

Which of the following are possible termination steps in the chlorination of methane?

Correct AnswerverifiedB

Predict the product(s) of the following reaction.

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Predict the major product(s) of the following reaction.

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Draw all of the reasonable resonance structures for the radical shown below.

Correct Answerverified11ea894b_acbf_9388_bba7_fd795b188426_TB4454_00_TB4454_00

Draw the arrows to show the propagation steps in the chlorination of propane to produce 2-chloropropane.

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Predict the major product(s) of the following reaction.

Correct AnswerverifiedShow Answer

Which of the following correctly describes the nature of the transition state of the rate-determining step of the free-radical bromination of methane?

Correct AnswerverifiedShow Answer

Identify the intermediate leads to the major product for the reaction of 2-methyl-2-butene with hydrogen bromide and hydrogen peroxide.

Correct AnswerverifiedShow Answer

Which of the following is expected to be a major product for the reaction shown below?

Correct AnswerverifiedShow Answer

Give the arrows to show the propagation steps for the following reaction.

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Which of the following processes is responsible for the fact that free radical bromination of methane is slower than free radical chlorination?

Correct AnswerverifiedShow Answer

Draw all possible monochlorination products of 3,3-dimethylpentane, including stereoisomers.

Correct Answerverified11ea894b_acc4_74b7_bba7_6b02edad6035_TB4454_00_TB4454_00

Predict the major product of the following reaction.

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Which of the following is an example of initiation?

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Rank the following radicals in order of decreasing stability (most stable to least stable) .

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Which of the following is expected to function as an antioxidant?

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Identify an example of propagation.

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When 2-methyl-1-propene is exposed to NBS and UV light, only one major product is obtained. How many distinct resonances in the proton-decoupled 13C NMR spectrum are observed in the product?

Correct AnswerverifiedShow Answer

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When 2-methyl-1-propene is exposed to NBS and UV light, only one major product is obtained. How many distinct resonances in the proton-decoupled ¹³C NMR spectrum are observed in the product?

Correct Answer
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