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Which of the following statements about the mechanism of an E2 reaction isnot true?


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

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

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C

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


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

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

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Classify each alkene in vitamin D3 labeled I, II, III by the number of carbon substituents bonded to the double bond. Classify each alkene in vitamin D<sub>3</sub> labeled I, II, III by the number of carbon substituents bonded to the double bond.   A)  I = Monosubstituted; II = disubstituted; III = trisubstituted B)  I = Disubstituted; II = disubstituted; III = trisubstituted C)  I = Disubstituted; II = trisubstituted; III = disubstituted D)  I = Disubstituted; II = trisubstituted; III = trisubstituted


A) I = Monosubstituted; II = disubstituted; III = trisubstituted
B) I = Disubstituted; II = disubstituted; III = trisubstituted
C) I = Disubstituted; II = trisubstituted; III = disubstituted
D) I = Disubstituted; II = trisubstituted; III = trisubstituted

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

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D

Consider the following E2 reaction. What rate equation would be observed for this reaction? Consider the following E2 reaction. What rate equation would be observed for this reaction?   A)  Rate =k[CH<sub>3</sub>CH<sub>2</sub>CH<sub>2</sub>Br][KOC(CH<sub>3</sub>) <sub>3</sub>] B)  Rate =k[CH<sub>3</sub>CH<sub>2</sub>CH<sub>2</sub>Br]<sup>2</sup>[KOC(CH<sub>3</sub>) <sub>3</sub>] C)  Rate =k[CH<sub>3</sub>CH<sub>2</sub>CH<sub>2</sub>Br] D)  Rate = k[CH<sub>3</sub>CH<sub>2</sub>CH<sub>2</sub>Br][KOC(CH<sub>3</sub>) <sub>3</sub>]<sup>2</sup>


A) Rate =k[CH3CH2CH2Br][KOC(CH3) 3]
B) Rate =k[CH3CH2CH2Br]2[KOC(CH3) 3]
C) Rate =k[CH3CH2CH2Br]
D) Rate = k[CH3CH2CH2Br][KOC(CH3) 3]2

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

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


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

E) None of the above
F) All of the above

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Which of the following statements about an E1 mechanism is true?


A) The reaction is slowest with tertiary substrates.
B) The reaction follows second-order kinetics.
C) The identity of the leaving group affects the rate of reaction.
D) Polar aprotic solvents favor the E1 mechanism.

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

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C

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


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

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

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Which of the following statements about an E1 mechanism isnot true?


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

E) All 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)  IV C)  III D)  II


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

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

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