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Alcohols, Phenols and Ethers
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Ethers: Williamson synthesis and cleavage
NEET level
Single correct option
Difficulty 1 of 3
ap205
An excess of ethanol is heated with conc.
H
X
2
SO
X
4
at 413 K. The main organic product is
A
ethene
B
ethanal
C
ethoxyethane
D
ethyl hydrogen sulphate only, with no further reaction
Answer: C
At 413 K with excess alcohol, ethyl hydrogen sulphate reacts with a second ethanol molecule by SN2 to give
C
X
2
H
X
5
−
O
−
C
X
2
H
X
5
. Ethene forms at 443 K.
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