Organic Chemistry II

Professor Carl C. Wamser

Chem 335 - Winter Term

Pre-Quiz 15

(must be done in D2L before Thurs., Feb. 14, 7:30 am)

1. A primary alcohol can be prepared from an aldehyde by treatment with

a) NaOH

b) H2SO4

c) NaBH4

d) PCC

2. An aldehyde can be prepared from a primary alcohol by treatment with

a) NaOH

b) H2SO4

c) NaBH4

d) PCC

3. Ethanethiol is a gas at room temperature, but ethanol is aliquid. The major reason for this is

a) ethanol is more acidic

b) ethanol is more polar

c) ethanol has a higher molecular weight

d) ethanol C-O-H bonds are linear

4. Periodic acid (HIO4) is used to

a) cleave C=C bonds

b) oxidize geminal diols

c) oxidize vicinal diols

d) form epoxides

5. There are three isomeric ethers of formula C4 H10 O. In their C-13 NMR spectra,

a) all show 4 different peaks

b) all show 2 different peaks

c) one shows 4 peaks, one shows 3 peaks, and one shows 2 peaks

d) one shows 2 peaks and the others show 4 peaks