Question 1

Identify the product for the following reaction:

Accepted Answer

A)  3-methyl-1-pentene
B)  3-methyl-2-pentene
C)  3-methyl-1-pentane
D)  3-methyl-1-tert-butylpentante
E)  3-methylpentane

Question 2

Which of the following steps can be found in any of the polymerization mechanisms you learned?
I.initiation
II.condensation
III.propagation
IV.dehydrohalogenation
V.rearrangement

Accepted Answer

A)  I,III,V.
B)  II,III and IV
C)  III,IV,and V
D)  I,II,and III
E)  II,III,and V

Question 3

SN2 reactions are nucleophilic substitution reactions for which the rate determining step is bimolecular.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following groups would be ortho,para directors in electrophilic aromatic substitution?
I.-CN
II.-SO3H
III.-NH2
IV.-OH
V.-Br

Accepted Answer

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

Question 5

Synthesis of alkanes from alkyl halides is a typical example of E2 reaction.

Accepted Answer

A) True 
 B)False

Question 6

Classify the following reaction steps as initiation,propagation or termination.
A: Br-Br → 2 Br∙
B: H3CH2C∙ + Br∙ → CH3CH2Br
C: 2 H3CH2C∙ → CH3CH2CH2CH3

Accepted Answer

A)  Step A is initiation and steps B and C are propagation
B)  Steps A and B are initiation and step C is termination
C)  Step A is initiation,step B is termination and step C is propagation
D)  Step A is initiation,step B is propagation and step C is termination
E)  Step A is initiation and steps B and C are termination

Question 7

Which reagents would you choose to carry out the following transformations?
I.tBu  Reaction II use MeOH Reaction III use NaOCH(CH3) 2 B) Reaction I use NaOMe  Reaction II use MeOH Reaction III use NaOC(CH3) 3 C) Reaction I use NaOMe  Reaction II use MeOH Reaction III use NaOMe D) Reaction I use KOtBu  Reaction II use HC(=O) H Reaction III use NaOCH(CH3) 2 E) Reaction I use KOtBu  Reaction II use Na2Cr2O7 or K2Cr2O7 Reaction III use NaOCH(CH3) 2" class="answers-bank-image d-inline" rel="preload" >
II. tBu  Reaction II use MeOH Reaction III use NaOCH(CH3) 2 B) Reaction I use NaOMe  Reaction II use MeOH Reaction III use NaOC(CH3) 3 C) Reaction I use NaOMe  Reaction II use MeOH Reaction III use NaOMe D) Reaction I use KOtBu  Reaction II use HC(=O) H Reaction III use NaOCH(CH3) 2 E) Reaction I use KOtBu  Reaction II use Na2Cr2O7 or K2Cr2O7 Reaction III use NaOCH(CH3) 2" class="answers-bank-image d-inline" rel="preload" >
III. tBu  Reaction II use MeOH Reaction III use NaOCH(CH3) 2 B) Reaction I use NaOMe  Reaction II use MeOH Reaction III use NaOC(CH3) 3 C) Reaction I use NaOMe  Reaction II use MeOH Reaction III use NaOMe D) Reaction I use KOtBu  Reaction II use HC(=O) H Reaction III use NaOCH(CH3) 2 E) Reaction I use KOtBu  Reaction II use Na2Cr2O7 or K2Cr2O7 Reaction III use NaOCH(CH3) 2" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  Reaction I use KOtBu Reaction II use MeOHReaction III use NaOCH(CH3) 2
B)  Reaction I use NaOMe Reaction II use MeOHReaction III use NaOC(CH3) 3
C)  Reaction I use NaOMe Reaction II use MeOHReaction III use NaOMe
D)  Reaction I use KOtBu Reaction II use HC(=O) HReaction III use NaOCH(CH3) 2
E)  Reaction I use KOtBu Reaction II use Na2Cr2O7 or K2Cr2O7Reaction III use NaOCH(CH3) 2

Question 8

The rate of E2 reaction between an alkyl halide RX and a base B is given by the following expression (k is a rate constant) :

Accepted Answer

A)  k[RX]
B)  k[B]
C)  k[RX][B]
D)  k[RX]2
E)  k[RX]2[B]

Question 9

Predict the major product for the reaction: 
1-butene + HI →

Accepted Answer

A)  CH2ICH2CH2CH3 
B)  CH2ICH=CHCH3 
C)  CH2=CICH2CH3 
D)  CH3CHICH2CH3 
E)  CH3CI2CH2CH3

Question 10

When (CH3) 3CBr reacts with CH3ONa in methanol,two products are formed: a major one is an alkene and minor one is an ether.Identify the two products and by what mechanism(s) they are formed?

Accepted Answer

A)   3) 3CBr reacts with CH3ONa in methanol,two products are formed: a major one is an alkene and minor one is an ether.Identify the two products and by what mechanism(s) they are formed? 
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B)   3) 3CBr reacts with CH3ONa in methanol,two products are formed: a major one is an alkene and minor one is an ether.Identify the two products and by what mechanism(s) they are formed? 
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C)   3) 3CBr reacts with CH3ONa in methanol,two products are formed: a major one is an alkene and minor one is an ether.Identify the two products and by what mechanism(s) they are formed? 
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D)   3) 3CBr reacts with CH3ONa in methanol,two products are formed: a major one is an alkene and minor one is an ether.Identify the two products and by what mechanism(s) they are formed? 
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E)   3) 3CBr reacts with CH3ONa in methanol,two products are formed: a major one is an alkene and minor one is an ether.Identify the two products and by what mechanism(s) they are formed? 
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Question 11

Which of the following are nucleophiles?
I.CH3COCH3 
II.CH3Br 
III.CH3CH2C≡C-

Accepted Answer

A)  I
B)  II
C)  III
D)  I + II
E)  I + III

Question 12

Finish the sentence:
"Elimination reactions...

Accepted Answer

A)  ...can follow two different mechanisms."
B)  ...do not compete with other reaction types."
C)  ...usually give a saturated product."
D)  ...always give only one product."
E)  ...have only one mechanistic path."

Question 13

Complete the following reaction: NH3 + CH3Br →

Accepted Answer

A)  CH4 + NH2Br
B)  CH2=NH + H2 + HBr
C)  CH3NH2 + NH4+Br- 
D)  CH3NH3+Br- 
E)  There is no reaction.

Question 14

Predict major products for chlorination of the following three aromatic compounds:

Accepted Answer

A)   
B)   
C)   
D)   
E)

Exam 27: Reactions of Organic Compounds

Identify the product for the following reaction:

Correct Answer
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Classify the following reaction steps as initiation,propagation or termination. A: Br-Br → 2 Br∙ B: H₃CH₂C∙ + Br∙ → CH₃CH₂Br C: 2 H₃CH₂C∙ → CH₃CH₂CH₂CH₃

Correct Answer
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S_N2 reactions are nucleophilic substitution reactions for which the rate determining step is bimolecular.

Correct Answer
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Predict the major product for the reaction: 1-butene + HI →

Correct Answer
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Which reagents would you choose to carry out the following transformations? I. II. III.

Correct Answer
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Predict major products for chlorination of the following three aromatic compounds:

Correct Answer
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The rate of E2 reaction between an alkyl halide RX and a base B is given by the following expression (k is a rate constant) :

Correct Answer
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Synthesis of alkanes from alkyl halides is a typical example of E2 reaction.

Correct Answer
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Which of the following are nucleophiles? I.CH₃COCH₃ II.CH₃Br III.CH₃CH₂C≡C^-

Correct Answer
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Complete the following reaction: NH₃ + CH₃Br →

Correct Answer
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When (CH₃) ₃CBr reacts with CH₃ONa in methanol,two products are formed: a major one is an alkene and minor one is an ether.Identify the two products and by what mechanism(s) they are formed?

Correct Answer
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Finish the sentence: "Elimination reactions...

Correct Answer
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Which of the following steps can be found in any of the polymerization mechanisms you learned? I.initiation II.condensation III.propagation IV.dehydrohalogenation V.rearrangement

Correct Answer
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Which of the following groups would be ortho,para directors in electrophilic aromatic substitution? I.-CN II.-SO₃H III.-NH₂ IV.-OH V.-Br

Correct Answer
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Exam 27: Reactions of Organic Compounds

Identify the product for the following reaction:

Correct AnswerverifiedShow Answer

Classify the following reaction steps as initiation,propagation or termination. A: Br-Br → 2 Br∙ B: H3CH2C∙ + Br∙ → CH3CH2Br C: 2 H3CH2C∙ → CH3CH2CH2CH3

Correct AnswerverifiedShow Answer

SN2 reactions are nucleophilic substitution reactions for which the rate determining step is bimolecular.

Correct AnswerverifiedShow Answer

Predict the major product for the reaction: 1-butene + HI →

Correct AnswerverifiedShow Answer

Which reagents would you choose to carry out the following transformations? I. II. III.

Correct AnswerverifiedShow Answer

Predict major products for chlorination of the following three aromatic compounds:

Correct AnswerverifiedShow Answer

The rate of E2 reaction between an alkyl halide RX and a base B is given by the following expression (k is a rate constant) :

Correct AnswerverifiedShow Answer

Synthesis of alkanes from alkyl halides is a typical example of E2 reaction.

Correct AnswerverifiedShow Answer

Which of the following are nucleophiles? I.CH3COCH3 II.CH3Br III.CH3CH2C≡C-

Correct AnswerverifiedShow Answer

Complete the following reaction: NH3 + CH3Br →

Correct AnswerverifiedShow Answer

When (CH3) 3CBr reacts with CH3ONa in methanol,two products are formed: a major one is an alkene and minor one is an ether.Identify the two products and by what mechanism(s) they are formed?

Correct AnswerverifiedShow Answer

Finish the sentence: "Elimination reactions...

Correct AnswerverifiedShow Answer

Which of the following steps can be found in any of the polymerization mechanisms you learned? I.initiation II.condensation III.propagation IV.dehydrohalogenation V.rearrangement

Correct AnswerverifiedShow Answer

Which of the following groups would be ortho,para directors in electrophilic aromatic substitution? I.-CN II.-SO3H III.-NH2 IV.-OH V.-Br

Correct AnswerverifiedShow Answer

Correct Answer
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Classify the following reaction steps as initiation,propagation or termination. A: Br-Br → 2 Br∙ B: H₃CH₂C∙ + Br∙ → CH₃CH₂Br C: 2 H₃CH₂C∙ → CH₃CH₂CH₂CH₃

Correct Answer
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S_N2 reactions are nucleophilic substitution reactions for which the rate determining step is bimolecular.

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Which of the following are nucleophiles? I.CH₃COCH₃ II.CH₃Br III.CH₃CH₂C≡C^-

Correct Answer
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Complete the following reaction: NH₃ + CH₃Br →

Correct Answer
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When (CH₃) ₃CBr reacts with CH₃ONa in methanol,two products are formed: a major one is an alkene and minor one is an ether.Identify the two products and by what mechanism(s) they are formed?

Correct Answer
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Correct Answer
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Correct Answer
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Which of the following groups would be ortho,para directors in electrophilic aromatic substitution? I.-CN II.-SO₃H III.-NH₂ IV.-OH V.-Br

Correct Answer
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