Organic Chemistry 11th Edition by Francis Carey – Test Bank

Organic Chemistry 11th Edition by Francis Carey – Test Bank

Organic Chemistry, 11e (Carey)
Chapter 10 Introduction to Free Radicals

1) Which halogen forms the weakest bond to carbon?
A) F
B) Cl
C) Br
D) I

2) Which of the following is the most stable radical?

A) A
B) B
C) C
D) D

3) Studies indicate that the methyl radical is trigonal planar. Based on this, which of the following best describes the methyl radical?
A) The carbon is sp2 hybridized and the unpaired electron occupies an sp2 orbital.
B) The carbon is sp2 hybridized and the unpaired electron occupies a 2p orbital.
C) The carbon is sp3 hybridized and the unpaired electron occupies an sp3 orbital.
D) The carbon is sp3 hybridized and the unpaired electron occupies a 2p orbital.

4) Calculate ΔH° of reaction for the free radical bromination of cyclopentane to give bromocyclopentane.

A) −121 kJ/mol
B) −63 kJ/mol
C) +121 kJ/mol
D) +63 kJ/mol

5) The reaction shown below is what type?

A) addition
B) termination
C) propagation
D) initiation

6) Which of the following are the chain propagating steps in the free radical chlorination of methane?

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

7) Which one of the following gives a single monochlorination product?
A) 2,2-dimethylpropane
B) 2,3-dimethylbutane
C) 2,2-dimethylbutane
D) 2-methylpropane

8) Which of the following hydrocarbons has the slowest reaction rate with Br2 and light?
A) CH4
B) CH3CH2CH3
C) CH3CH2CH2CH3
D) (CH3)3CH

9) How many monochlorination products do you expect in the following reaction?

A) two
B) three
C) four
D) five

10) Which of the following is the key intermediate in the chlorination reaction below?

A) A
B) B
C) C
D) D