1.

Which halogen compound in each of the following pairs will react faster in S_(N)2reaction : (i) CH_(3)Br " or " CH_(3) I "" (ii) (CH_(3))_(3) C - Cl " or " CH_(3) - Cl

Answer»

Solution :(i)`CH_(3)I`will REACT faster than `CH_(3)Br " in " S_(N)2`reaction because `I^(-)`is a better leaving group.
(ii)`CH_(3)CL`will react faster than `(CH_(3))_(3)C Cl `because the nucleophile will not face STERIC heindrace with `CH_(3)Cl`.


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