Chem 335 - Winter 2000
Organic Chemistry II
Dr. Carl C. Wamser

Chapter 13 Pre-Quiz

1. All of the following are magnetic nuclei that could be the basis for an NMR spectrum EXCEPT

a) H

b) D

c) C-12

d) C-13

e) N-14

2. The x-axis of NMR spectra is "chemical shift", measured relative to

a) the most intense peak

b) an arbitrary zero point

c) tetramethylsilane reference

d) the lowest energy absorption

e) ppm

3. In a C-13 NMR, 1-bromopropane would show how many different absorptions?
(ignore spin-spin splitting)

a) 1

b) 2

c) 3

d) more than 3

e) can't tell

4. In a C-13 NMR, 2-bromopropane would show how many different absorptions?
(ignore spin-spin splitting)

a) 1

b) 2

c) 3

d) more than 3

e) can't tell

5. In a proton NMR, 2-bromopropane would show how many different absorptions?
(ignore spin-spin splitting)

a) 1

b) 2

c) 3

d) 7

e) can't tell