When benzene is treated with excess of Cl_2 i | vedclass

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Question

(C) When benzene reacts with excess $Cl_2$ in the presence of a Lewis acid catalyst like $FeCl_3$ or $I_2$,it undergoes electrophilic aromatic substit

Vedclass · Accepted Answer

Hexachlorobenzene

Vedclass · Answer

(C) When benzene reacts with excess $Cl_2$ in the presence of a Lewis acid catalyst like $FeCl_3$ or $I_2$,it undergoes electrophilic aromatic substitution.In the presence of excess chlorine,all hydrogen atoms of the benzene ring are replaced by chlorine atoms,resulting in the formation of $C_6Cl_6$,which is known as hexachlorobenzene.Note: If the reaction were performed in the presence of $UV$ light (free radical addition),the product would be benzene hexachloride $(C_6H_6Cl_6)$. Since the question specifies $I_2$ (a Lewis acid catalyst),the product is hexachlorobenzene.

When benzene is treated with excess of $Cl_2$ in the presence of $FeCl_3$ (or $I_2$ as a carrier),the end product is:

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