Question

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

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

Answer 1

Answer: (C)

two phenyl groups are replaced by two para-methoxyphenyl groups

Answer 2

When two phenyl groups are replaced by two para methoxy group, carbocation formed will be more stable