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Standard XII
Chemistry
Elimination Reactions of Alkyl Halides
Dehydration o...
Question
Dehydration of alcohol to form alkene is an ........ reaction.
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Solution
Dehydration of alcohol to form alkene is an elimination reaction
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Q.
When two alkenes may be formed by dehydration of an alcohol, the alkene which is more substituted is the major or preferred product. This generalisation is known as
Q.
The temperature required for the dehydration of alcohol to get alkene by using
A
l
2
O
3
is :
Q.
An alkene
X
is obtained by dehydration of an alcohol
Y
.
X
on ozonolysis gives two molecules of ethanol for every molecule of the alkene.
X
and
Y
are:
Q.
Assertion: Alcohols on dehydration can produce ether as well as alkene under different conditions.
Reason: Dehydration of alcohol proceeds through the formation of carbonium ion.
Q.
Explain why dehydration of alcohols to form alkenes is always carried out with conc.
H
2
S
O
4
, and not with conc.
H
C
l
or
H
N
O
3
?
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