Engineering
Chemistry
Aromatic Nucleophilic Substitution
Question

In chlorination of benzene in presence of FeCl3, function of FeCl3 is :

resonance stabilisation.
to form electrophile.
 act as a catalyst.
to provide halogen.
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Solution

Since FeCl3 is generated again after the reaction hence it is acting as catalyst.

Attack of Cl2 on FeCl3 :

Benzene ring attack on electrophile :