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In the following reaction, which base most favors the anti-Zaitsev product? In the following reaction, which base most favors the anti-Zaitsev product? A) B) C) D) E)


A) In the following reaction, which base most favors the anti-Zaitsev product? A) B) C) D) E)
B) In the following reaction, which base most favors the anti-Zaitsev product? A) B) C) D) E)
C) In the following reaction, which base most favors the anti-Zaitsev product? A) B) C) D) E)
D) In the following reaction, which base most favors the anti-Zaitsev product? A) B) C) D) E)
E) In the following reaction, which base most favors the anti-Zaitsev product? A) B) C) D) E)

F) B) and D)
G) A) and D)

Correct Answer

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A

Which of the following factors favor an SN2 reaction with a negatively charged nucleophile?


A) a good leaving group
B) a good nucleophile
C) an unhindered reaction center
D) an aprotic polar solvent
E) all of the above

F) A) and B)
G) None of the above

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E

Which of the following bases most favors elimination over substitution?


A) Which of the following bases most favors elimination over substitution? A) B) C) D) E)
B) Which of the following bases most favors elimination over substitution? A) B) C) D) E)
C) Which of the following bases most favors elimination over substitution? A) B) C) D) E)
D) Which of the following bases most favors elimination over substitution? A) B) C) D) E)
E) Which of the following bases most favors elimination over substitution? A) B) C) D) E)

F) B) and D)
G) C) and D)

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C

Which of the following statements is false?


A) Increasing solvent polarity decreases the reaction rate when any reactant is charged.
B) Increasing solvent polarity increases the reaction rate when none of the reactants is charged.
C) An E2 reaction is favored by a high concentration of a strong, hindered base.
D) An E1 reaction is favored by a secondary alkyl halide.
E) An E2 is favored by a strong base.

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

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Which of the following best explains a partial racemization?


A) a good leaving group
B) an SN2 reaction
C) formation of an intimate ion pair
D) completely dissociated ions
E) a polar solvent

F) A) and B)
G) A) and C)

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Which alkyl halide reacts the fastest with sodium methoxide under E2 conditions?


A) Which alkyl halide reacts the fastest with sodium methoxide under E2 conditions? A) B) C) D) E)
B) Which alkyl halide reacts the fastest with sodium methoxide under E2 conditions? A) B) C) D) E)
C) Which alkyl halide reacts the fastest with sodium methoxide under E2 conditions? A) B) C) D) E)
D) Which alkyl halide reacts the fastest with sodium methoxide under E2 conditions? A) B) C) D) E)
E) Which alkyl halide reacts the fastest with sodium methoxide under E2 conditions? A) B) C) D) E)

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

Correct Answer

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Which of the following statements is not true about the SN1 reaction of an alkyl halide?


A) Tertiary alkyl halides and benzyl and allyl halides undergo SN1 reactions.
B) The rate is dependent upon the stability of the carbocation.
C) The rate is dependent upon the concentration of the nucleophile.
D) The reaction requires a good leaving group.
E) The reaction is favored in a polar protic solvent.

F) B) and C)
G) C) and D)

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What happens in the following SN2 reaction if the concentration of both reagents is doubled? What happens in the following S<sub>N</sub>2 reaction if the concentration of both reagents is doubled? A) The reaction rate doubles. B) The reaction rate triples. C) The reaction rate is quadrupled. D) The reaction rate is unaffected. E) The reaction rate is halved.


A) The reaction rate doubles.
B) The reaction rate triples.
C) The reaction rate is quadrupled.
D) The reaction rate is unaffected.
E) The reaction rate is halved.

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

Correct Answer

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Which of the following substrates react fastest in an SN2 reaction?


A) vinyl bromide
B) cyclohexyl bromide
C) phenyl iodide
D) 2-bromopropane
E) benzyl bromide

F) None of the above
G) A) and C)

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Which of the following species is the best nucleophile in methanol?


A) F?
B) NH3
C) CH3S?
D) CH3O?
E) HO?

F) A) and E)
G) C) and E)

Correct Answer

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Which of the following compounds undergoes an E2 reaction most readily?


A) Which of the following compounds undergoes an E2 reaction most readily? A) B) C) D) E)
B) Which of the following compounds undergoes an E2 reaction most readily? A) B) C) D) E)
C) Which of the following compounds undergoes an E2 reaction most readily? A) B) C) D) E)
D) Which of the following compounds undergoes an E2 reaction most readily? A) B) C) D) E)
E) Which of the following compounds undergoes an E2 reaction most readily? A) B) C) D) E)

F) A) and B)
G) A) and C)

Correct Answer

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