Organic Chemistry, 9Th Edition by Francis Carey -Test Bank

Organic Chemistry, 9Th Edition by Francis Carey -Test Bank

Chapter 6: Reactions of Alkenes – Addition Reactions
1. Which one of the following is not a metal catalyst for the hydrogenation of an alkene? A) Pd B) Pt C) Na D) Ni Ans: C

2. What is(are) the product(s) in the Pd-catalyzed hydrogenation of 1,2-dimethylcyclopentene?
A) trans-1,2-dimethylcyclopentane
B) cis-1,2-dimethylcyclopentane
C) a mixture of trans and cis-1,2-dimethylcyclopentane
D) 1,1-dimethylcyclopentane Ans: B

3. Which of the following alkenes is expected to have the highest heat of hydrogenation? A) 1-pentene B) trans-2-pentene C) cis-2-pentene D) 2-methyl-2-butene Ans: A

4. Which alkene below is thermodynamically the most stable?
A) 1-hexene B) trans-3-hexene C) cis-3-hexene D) 2-methyl-2-pentene Ans: D

5. The stereochemical pathway for the hydrogenation of an alkene with a metal catalyst, such as platinum, occurs via
A) syn addition. C) Markovnikov addition.
B) anti addition. D) anti-Markovnikov addition.
Ans: A

6. The product(s) in the following reaction is(are)

A) only trans-1-4-dimethylcyclohexane.
B) only cis-1-4-dimethylcyclohexane.
C) both trans and cis-1-4-dimethylcyclohexane.
D) methylcyclohexane.
Ans: C

7. What is the major product of the following reaction?

Ans: B

Ans: A

9. Which of the following is not a possible reaction of a carbocation?
A) addition of a nucleophile
B) rearrangement to a more stable carbocation
C) addition of a proton to form an alkane
D) loss of a β-hydrogen to form an alkene Ans: C