What product is obtained when isobutyl chloride reacts with benzene in presence in presence of `AlCl_(3)` ?

Explanation

The initially formed carbocation rearranges to a more stable tertiary carbocation a shown.
`CH_(3) - underset(CH_(3))underset(|)(CH)-CH_(2)Cl+AlCl_(3) to CH_(3)-underset(CH_(3))underset(|)(CH)-overset(+)CH_(2)+overset(-)(Al)Cl_(4)`
`underset(("Primary"))(CH_(3)-underset(CH_(3))underset(|)(CH)-overset(+)CH_(2)) overset(H^(-)"shift")tounderset(("tertiary"))(CH_(3)-underset(CH_(3))underset(|)overset(+)C-CH_(3))`

The final product of the reaction is tert. butyl benzene.