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Alkenes: preparation and addition reactions
NEET level
Single correct option
Difficulty 1 of 3
hc019
Ethanol is heated with excess concentrated
H
X
2
SO
X
4
at
443
K
. The main product is
A
diethyl ether
B
ethyl hydrogen sulfate only, with no gas
C
ethane
D
ethene
Answer: D
At
443
K
with excess acid, ethanol undergoes dehydration (elimination of water) to give ethene. Ether formation needs excess alcohol at about
413
K
.
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