Which of the compounds will react faster in `S_(N)1` reaction with `""^(-)OH` ion?
`CH_(3)-CH_(2)-ClorC_(6)H_(5)-CH_(2)-Cl`

Explanation

In the `S_(N^(1))` reaction, a carbocation intermediate is iniitially formed in the rate determining step. In case of benzyl chloride, the benzyl carbocation is resonance stabilised.
However, in case of ethyl chloride or chloroethane, `CH_(3)-Coverset(o+)(H_(2))` carbocation can exhibit only hyper-conjugation effect. It is comparatively less stable. As a result, benzyl chloride reacts faster with `OH^(-)` ion in the `S_(N^(1))` reaction in comparison to ethyl chloride.