KEY - Set 7 Iverson homework - Homework Problem Set 7...

Homework Problem Set 7 Iverson CH310M/318M Due Wednesday, Nov. 10
1
Chemistry 310M
Dr. Brent Iverson
7th Homework
November 3, 2010
NAME (Print): _____________________________
SIGNATURE: _____________________________
Please print the
first three letters
of your last name
in the three boxes

Homework Problem Set 7 Iverson CH310M/318M Due Wednesday, Nov. 10
2
Score: _________

Homework Problem Set 7 Iverson CH310M/318M Due Wednesday, Nov. 10
3
1. Complete the following intiation and propagation steps for the addition of HBr via a free radical chain
reaction mechanism. Use appropriate arrows to show movement of electron density, and show all non-
bonding electrons as dots and show any formal charges. If any of the species are really a racemic
mixtures of enantiomers, you only need to draw one stereoisomer and write "racemic"
Initiation
O R O R
R O R O
+
R O
+
Br H
+ R OH Br
same species
Propagation
Br
C
C
C
H
H
H
H
H
H
+
C
C
C
H
H
Br
H
H
H H
C
C
C
H
H
Br
H
H
H H
Br H
Br
+
same species
same species
C
C
C
H
Br
H
H
H H
H H
same species
Products
+
h !