The acidic hydrolysis of ether (X) shown belo | vedclass

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(C) The reaction proceeds by an $S_N1$ mechanism,which involves the formation of a carbocation intermediate.The rate of the reaction depends on the st

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two phenyl groups are replaced by two para-methoxyphenyl groups.

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(C) The reaction proceeds by an $S_N1$ mechanism,which involves the formation of a carbocation intermediate.The rate of the reaction depends on the stability of the carbocation formed.Greater the electron-releasing effect of the attached groups,the greater is the stability of the intermediate carbocation,and consequently,the faster is the rate of the reaction.The $p-MeO-C_6H_4-$ group is a strong electron-donating group due to the $+M$ effect of the $-OMe$ group.If two phenyl groups are replaced by two $p-methoxyphenyl$ groups,the strong $+M$ effect of the two $-OMe$ groups stabilizes the carbocation significantly better than the unsubstituted phenyl groups,thereby making the reaction the fastest.

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

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