Organic Chemistry II
	Professor Carl C. Wamser
Chem 335 - Winter 2008	Pre-Quiz 12

(must be done in WebCT before Fri., Jan. 18, 8:30 am)

1. The cation intermediate in the electrophilic substitution of benzene has how many resonance forms?

a. 1
b. 2
* c. 3
d. 4
e. 5

2. In Friedel-Cratfs alkylation, the electrophile is

a. a free radical
* b. a carbocation
c. a carbanion
d. H+
e. Br2

3. As a substituent, Cl is

a. activating and ortho,para-directing
b. activating and meta-directing
* c. deactivating and ortho,para-directing
d. deactivating and meta-directing

4. Friedel-Crafts acylation followed by Clemmensen reduction is a method for synthesizing

a. nitrobenzenes
b. halobenzenes
c. naphthalenes
d. carboxylic acids
* e. alkylbenzenes

5. Which is the most likely value for the partial rate factor of a meta position of nitrobenzene?

a. 1000
b. 1
* c. 0.001