The major product in the reaction
`CH_(2)=CH-Cnoverset(HX)rarr` ? Is

Options

A. `CH_(3)-underset(X)underset(|)(C )H-CN`
B. `X-CH_(2)-CH_(2)-CN`
C. Both products are formed in equal yield
D. `CH_(2)=CH-X`

Answer

B

Explanation

`CH_(2)=CH-CN overset(HX)underset(-X^(-))rarr underset(("More stable"))(overset(+)(C )H_(2)-CH-CN) overset(+X^(-))rarr underset(X)underset(|)(C )H_(2)-underset(("Major"))(CH-CN)` The addition, here occurs against against the Markownikov's rule due to electron withdrawing nature of CN.