Organic Chemistry II
	Professor Carl C. Wamser
Chem 335 - Winter Term	Pre-Quiz 13

(must be done in D2L before Tues., Jan. 29, 7:30 am)

1. Which isomer will show only a single peak in its proton NMR spectrum?

a) 1,1-dibromopropane

b) 1,2-dibromopropane

c) 1,3-dibromopropane

* d) 2,2-dibromopropane

2. In order to distinguish cyclononane from cyclodecane, which spectroscopy technique would be most useful?

a) proton NMR

b) infrared

* c) mass spectrometry

d) ultraviolet-visible

3. How many different signals (unique Hs) would you expect in the proton NMR spectrum of 2-chloropentane?

a) 2

b) 3

c) 4

* d) 5

4. A strong infrared absorption at 1710 cm-1 is most likely an indication of what functional group

* a) C=O

b) O-H

c) C=C

d) C-Br

5. The compound below expected to have an absoption at the longest wavelength in its ultraviolet-visible spectrum is

a) 1,3-cyclohexadiene

b) benzene

c) 1,3,5-hexatriene

* d) 1,3,5,7-octatetraene