Download Chem 3.5 #4 Alcohols 2

CHEMISTRY 3.5
Name:
WORKSHEET FOUR
ORGANIC CHEMISTRY
Alcohols continued
1.
When a warmed mixture of an alcohol and Lucas reagent goes cloudy, explain what is
causing the cloudiness.
2.
Alcohols can be oxidised by strong oxidising agents such as
Primary alcohols are first oxidised to
and then to
. Secondary alcohols are oxidised to
.
alcohols are not able to be oxidised.
3.
The following alcohols are reacted with acidified potassium permanganate solution. Under each
formula, draw and name the product(s) of their oxidation.
If no reaction occurs, write no product in the box.
CH3
CH3
C
H
OH
CH3
CH3
C
OH
OH
CH3
CH3CH2
CH
CH3
OH
CH3CH2 CH2 CH2OH
CH3CH2 CH (CH3)2OH
CH3CH CH2 CH2 CH2 CH3
4.
Explain why tertiary alcohols cannot be oxidised in this way.
5.
When carrying out the oxidation of alcohols in the laboratory, the oxidation of primary alcohols
can be controlled so as to yield the preferred product. Explain what can be done to favour the
formation of
6.
(a)
The aldehyde product.
(b)
The carboxylic acid product.
Complete the following flow chart showing some of the reactions of alcohols
(a)
(b)
CH3CH=CH2
(c)
SOCl2
Dil. H2SO4
(d)
CH3 CH2 CH2OH
H+/Cr2O72-
(e)
(f)
CH3CH2COOH