Organic Chemistry II
	Professor Carl C. Wamser
Chem 335 - Winter Term	Pre-Quiz 18

(must be done in D2L before Wed., Mar. 7, 8:30 am)

1. Prostaglandin PGE1 has how many carbon atoms?

a) 18

* b) 20

c) 21

d) 22

2. The isomer of nitrobenzoic acid that is the strongest acid is

* a) ortho

b) meta

c) para

d) all are equally acidic

3. Reaction of an isobutyl Grignard reagent with carbon dioxide will give (after acid workup)

a) 2-methylbutanoic acid

b) 2-methylpropanoic acid

c) 3-methylpropanoic acid

* d) 3-methylbutanoic acid

4. In the acid-catalyzed formation of esters from carboxylic acids in alcohol solvent, the only intermediate listed below that is NOT involved in the mechanism is

a) protonated carboxylic acid

* b) carboxylate anion

c) protonated ester

d) protonated alcohol

5. In the proton NMR spectrum of a carboxylic acid, the COOH proton is expected at about

a) 0-5

b) 5-7

c) 7-10

* d) 10-12