Question

What happens when chlorobenzene is treated with cl2/fecl3

Answer 1

Treatment of  chlorobenzene with Cl₂ in the presence of FeCl₃ yields :

Dichlorobenzene

We can write this in equation form.

The equation is as shown below.

Chlorobenzene + Chlorine ( In the presence of FeCl₃) ———> Ortho dichlorobenzene + Para dichlorobenzene

Answer 2

Treatment of chlorobenzene with Cl2 in presence of FeCl3 produces dichloro benzene 

Chloro benzene + chlorine --------in presence of FeCl3 -------------> ortho dichlorobenzene + para dichloro benzene .

I hope my answer help to u and right