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Chemistry
During dehydration of alcohols to alkenes by heating with concentrated H 2 SO 4 the initiation step is :
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Q. During dehydration of alcohols to alkenes by heating with concentrated $H _{2} SO _{4}$ the initiation step is :
AIEEE
AIEEE 2003
Alcohols Phenols and Ethers
A
protonation of alcohol molecule
63%
B
formation of carbocation
6%
C
elimination of water
20%
D
formation of an ester
11%
Solution:
Protonation of $- OH$ is first step. Conversion of poor leaving group (-OH) into good leaving group $(-\overset{+}{O}H_{2})$