JEE Advance - Chemistry (2014 - Paper 2 Offline - No. 7)

The acidic hydrolysis of ether (X) shown below is fastest when

JEE Advanced 2014 Paper 2 Offline Chemistry - Alcohols, Phenols and Ethers Question 15 English

one phenyl group is replaced by a methyl group.
one phenyl group is replaced by a para-methoxyphenyl group.
two phenyl groups are replaced by two para-methoxyphenyl groups.
no structural change is made to X.

Explanation

The acidic hydrolysis is fastest when two phenyl groups are replaced by two para-methoxyphenyl groups.

This is because $$-$$OCH3 is an electron donating group which increases the stability of the carbocation.

JEE Advanced 2014 Paper 2 Offline Chemistry - Alcohols, Phenols and Ethers Question 15 English Explanation

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