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Which of the following statements about an E1 mechanism is not true?


A) It is a two-step process and has the same first step as an SN1 mechanism.
B) It involves the formation of a carbocation from eliminating a good leaving group.
C) A common competing reaction is rearrangement of a less stable carbocation to a more stable carbocation.
D) The loss of a proton by the carbocation is a slow step.

E) B) and C)
F) A) and B)

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How many unique β carbons are found in the alkyl halide below? How many unique β carbons are found in the alkyl halide below? A) 1 B) 2 C) 3 D) 4


A) 1
B) 2
C) 3
D) 4

E) A) and D)
F) B) and C)

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What is the product of the following reaction? What is the product of the following reaction? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) B) and C)
F) None of the above

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Which of the following is the major elimination product of the following reaction? Which of the following is the major elimination product of the following reaction? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) A) and C)
F) B) and C)

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What is (are) the elimination product(s) of the following reaction? What is (are) the elimination product(s) of the following reaction? A) Only I B) Only II C) Only III D) II and III


A) Only I
B) Only II
C) Only III
D) II and III

E) A) and D)
F) B) and C)

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What is the major elimination product obtained from the following reaction? What is the major elimination product obtained from the following reaction? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) A) and D)
F) A) and C)

Correct Answer

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Which of the labeled protons in the compound below is most readily abstracted under E2 conditions? Which of the labeled protons in the compound below is most readily abstracted under E2 conditions? A) H<sub>a</sub> B) H<sub>b</sub> C) H<sub>c</sub> D) H<sub>d</sub>


A) Ha
B) Hb
C) Hc
D) Hd

E) C) and D)
F) All of the above

Correct Answer

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What is the major elimination product obtained from the following reaction? What is the major elimination product obtained from the following reaction? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) A) and B)
F) C) and D)

Correct Answer

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Which of the following is the dihalide that can be used to prepare the alkyne below? Which of the following is the dihalide that can be used to prepare the alkyne below? A) I and II B) II and III C) I and III D) I,II,and III


A) I and II
B) II and III
C) I and III
D) I,II,and III

E) B) and C)
F) All of the above

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D

Which of the following statements about the mechanism of an E2 reaction is not true?


A) It is fastest with tertiary halides.
B) It exhibits first-order kinetics.
C) A better leaving group should make a faster reaction.
D) All bonds are broken and formed in a single step.

E) C) and D)
F) A) and C)

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Which of the following is the major E2 product formed from the following alkyl halide? Which of the following is the major E2 product formed from the following alkyl halide? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) None of the above
F) A) and D)

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B

What is (are) the elimination product(s) of the following reaction? What is (are) the elimination product(s) of the following reaction? A) Only I B) Only II C) Only III D) II and III


A) Only I
B) Only II
C) Only III
D) II and III

E) C) and D)
F) All of the above

Correct Answer

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Which of the following statements about an E1 mechanism is not true?


A) The reaction is fastest with tertiary alkyl halides.
B) A better leaving group makes the reaction rate increase.
C) The reaction follows first-order kinetics.
D) Stronger bases favor the E1 reaction.

E) None of the above
F) B) and C)

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What is the product of the following reaction? What is the product of the following reaction? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) A) and B)
F) A) and C)

Correct Answer

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Which alkyl halide(s) would give the following alkene as the only product in an elimination reaction? Which alkyl halide(s) would give the following alkene as the only product in an elimination reaction? A) Only I B) Only II C) Only III D) I and II


A) Only I
B) Only II
C) Only III
D) I and II

E) A) and C)
F) B) and D)

Correct Answer

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What is (are) the product(s) of the following reaction? What is (are) the product(s) of the following reaction? A) Only I B) Only II C) Only III D) I and II


A) Only I
B) Only II
C) Only III
D) I and II

E) A) and B)
F) B) and D)

Correct Answer

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Which of the following is the most reactive substrate in an E2 reaction? Which of the following is the most reactive substrate in an E2 reaction? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) A) and B)
F) A) and C)

Correct Answer

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D

What is (are) the product(s) of the following reaction? What is (are) the product(s) of the following reaction? A) I and II B) II and III C) I and III D) I,II,and III


A) I and II
B) II and III
C) I and III
D) I,II,and III

E) B) and C)
F) A) and B)

Correct Answer

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What is the major elimination product obtained from the following reaction? What is the major elimination product obtained from the following reaction? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) A) and D)
F) None of the above

Correct Answer

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What is the most likely mechanism for the reaction below? What is the most likely mechanism for the reaction below? A) S<sub>N</sub>1 B) S<sub>N</sub>2 C) E1 D) E2


A) SN1
B) SN2
C) E1
D) E2

E) A) and D)
F) B) and D)

Correct Answer

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