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Chemistry Question on Alcohols, Phenols and Ethers

Which of the following alcohols is dehydrated most easily with conc. H2SO4H_2SO_4?

A

p−O2NC6H4CH(OH)CH3p -O_2NC_6H_4CH(OH)CH_3

B

p−ClC6H4CH(OH)CH3p-ClC_6H_4CH(OH)CH_3

C

p−CH3OC6H4CH(OH)CH3p-CH_3OC_6H_4CH(OH)CH_3

D

C6H5CH(OH)CH3C_6H_5CH(OH)CH_3

Answer

p−CH3OC6H4CH(OH)CH3p-CH_3OC_6H_4CH(OH)CH_3

Explanation

Solution

Electron releasing inductive effect of ??CH3??CH_3 group facilitates the protonation of alcohol involved in ehydration mechanism.