Question 1

Which compound would be the major product?

Accepted Answer

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

Question 2

$\pi$ bonds often react with electron-seeking reagents, also referred to as ______.

Accepted Answer

The answer of  $\pi$ bonds often react with electron-seeking...

Question 3

Predict the products from E2 and E1 reactions. Write and explain the mechanisms of E2 and E1 reactions.

Accepted Answer

Elimination reactions convert a single b...

Question 4

What product(s)  would you expect to obtain from the following SN2 reaction? N2 reaction?   A)  I B)  II C)  equimolar mixture of I and II D)  III E)  mixture of II and III" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   I
B)   II
C)   equimolar mixture of I and II
D)   III
E)   mixture of II and III

Question 5

Which compound listed below would you expect to be the major product when 2-bromo-2-methylbutane is refluxed with KOH/ethanol?
I  
II 
III 
IV 
V

Accepted Answer

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

Question 6

Which of the following does not contain a nucleophile?

Accepted Answer

A)   propanol
B)   propane
C)   n-propylamide
D)   propene
E)   propoxide ion

Question 7

Select the rate law for the following reaction, e.g.,
CH3CH2CH2CHBrCH3 + OH-   →\rarr→   CH3CH2CH2CHOHCH3 + X-(RBr)

Accepted Answer

A)   Rate = k [RBr]
B)   Rate = k [RBr] [OH-]
C)   Rate = k [RBr]2 [OH-]
D)   Rate = k [RBr] [OH-]2
E)   Rate = k [RBr]2 [OH-]2

Question 8

The major product(s)  of the following reaction is (are)

Accepted Answer

A)   I
B)   II
C)   III
D)   IV
E)   equimolar mixture of I and II

Question 9

Ambident nucleophiles are ones which can react with a substrate at either of two nucleophilic sites. Which of the following is NOT an ambident nucleophile?

Accepted Answer

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

Question 10

Which of the following is an electrophile?

Accepted Answer

A)   H2O
B)   CH3O-
C)   NH3
D)   NH4+
E)   All are nucleophiles.

Question 11

Which would be the major product of the following reaction?

Accepted Answer

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

Question 12

Treating 1-methylcyclohexene with HCl would yield primarily which of these?

Accepted Answer

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

Question 13

Reagents that seek to react with a proton or some other electron-deficient centre are called ______.

Accepted Answer

The answer of Reagents that seek to react with a...

Question 14

Which of the following statements is (are)  true of SN1 reactions of alkyl halides in general?

Accepted Answer

A)   The rate of an SN1 reaction depends on the concentration of the alkyl halide.
B)   The rate of an SN1 reaction depends on the concentration of the nucleophile.
C)   SN1 reactions of alkyl halides are favoured by polar solvents.
D)   Answers a)  and c)  only are true.
E)   Answers a, b, and c are true.

Question 15

Which of these is NOT formed when cyclopentene reacts with an aqueous solution of bromine?

Accepted Answer

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

Question 16

What would be the major product of the following reaction?

Accepted Answer

A)   I
B)   II
C)   III
D)   IV
E)   equimolar amounts of I and III

Question 17

Which product (or products)  would be formed in appreciable amount(s)  when trans-1-bromo-2-methylcyclohexane undergoes dehydrohalogenation upon treatment with sodium ethoxide in ethanol?

Accepted Answer

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

Question 18

Consider the SN2 reaction of 2-iodopentane with CH3CO2- ion. N2 reaction of 2-iodopentane with CH3CO2- ion.   Assuming no other changes, what effect on the rate would result from simultaneously doubling the concentrations of both 2-iodopentane and CH3CO2- ion? A)  no effect B)  double the rate C)  triple the rate D)  rate would increase by four times E)  rate would increase by six times" class="answers-bank-image d-inline" rel="preload" > Assuming no other changes, what effect on the rate would result from simultaneously doubling the concentrations of both 2-iodopentane and CH3CO2- ion?

Accepted Answer

A)   no effect
B)   double the rate
C)   triple the rate
D)   rate would increase by four times
E)   rate would increase by six times

Question 19

Addition of hydrogen chloride to the following molecule would produce

Accepted Answer

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

Question 20

Which of the following is a nucleophile?

Accepted Answer

A)   hexane
B)   cyclohexane
C)   1-chlorohexane
D)   cyclohexene
E)   none of the above

Exam 11: Organic Chemistryreactions

Which would be the major product of the following reaction?

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Which of the following statements is (are) true of SN1 reactions of alkyl halides in general?

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Which of the following is a nucleophile?

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Which compound would be the major product?

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Which product (or products) would be formed in appreciable amount(s) when trans-1-bromo-2-methylcyclohexane undergoes dehydrohalogenation upon treatment with sodium ethoxide in ethanol?

Correct AnswerverifiedShow Answer

Treating 1-methylcyclohexene with HCl would yield primarily which of these?

Correct AnswerverifiedShow Answer

Which of the following is an electrophile?

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Consider the SN2 reaction of 2-iodopentane with CH3CO2- ion. Assuming no other changes, what effect on the rate would result from simultaneously doubling the concentrations of both 2-iodopentane and CH3CO2- ion?

Correct AnswerverifiedShow Answer

Which of these is NOT formed when cyclopentene reacts with an aqueous solution of bromine?

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Reagents that seek to react with a proton or some other electron-deficient centre are called ______.

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What would be the major product of the following reaction?

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π\piπ bonds often react with electron-seeking reagents, also referred to as ______.

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Which compound listed below would you expect to be the major product when 2-bromo-2-methylbutane is refluxed with KOH/ethanol? I II III IV V

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What product(s) would you expect to obtain from the following SN2 reaction?

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Select the rate law for the following reaction, e.g., CH3CH2CH2CHBrCH3 + OH- →\rarr→ CH3CH2CH2CHOHCH3 + X-(RBr)

Correct AnswerverifiedShow Answer

Predict the products from E2 and E1 reactions. Write and explain the mechanisms of E2 and E1 reactions.

Correct AnswerverifiedElimination reactions convert a single b...View AnswerShow Answer

The major product(s) of the following reaction is (are)

Correct AnswerverifiedShow Answer

Addition of hydrogen chloride to the following molecule would produce

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Ambident nucleophiles are ones which can react with a substrate at either of two nucleophilic sites. Which of the following is NOT an ambident nucleophile?

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Which of the following does not contain a nucleophile?

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Which of the following statements is (are) true of S_N1 reactions of alkyl halides in general?

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Consider the S_N2 reaction of 2-iodopentane with CH₃CO₂^- ion. Assuming no other changes, what effect on the rate would result from simultaneously doubling the concentrations of both 2-iodopentane and CH₃CO₂^- ion?

Correct Answer
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$\pi$ bonds often react with electron-seeking reagents, also referred to as ______.

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What product(s) would you expect to obtain from the following S_N2 reaction?

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Select the rate law for the following reaction, e.g., CH₃CH₂CH₂CHBrCH₃ + OH^- $\rarr$ CH₃CH₂CH₂CHOHCH₃ + X^-(RBr)

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Elimination reactions convert a single b...
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