question_answer

Which one of the following is an intermediate in the reaction of benzene with \[C{{H}_{3}}Cl\] in the presence of anhydrous \[AlC{{l}_{3}}\]?

A)  \[C{{l}^{-}}\]                                     

B)  \[CH_{3}^{-}\]

C)  \[CH_{3}^{+}\]                                

D)   

Correct Answer: C

Solution :

Mechanism                 \[C{{H}_{3}}Cl+AlC{{l}_{3}}\xrightarrow{{}}CH_{3}^{+}+AlCl_{4}^{-}\]                 \[{{H}^{+}}+AlCl_{4}^{-}\xrightarrow{{}}HCl+AlC{{l}_{3}}\]