Question

What is the molecular formula of the product formed when benzene is treated with ethyl chloride in the presence of anhydrous aluminium chloride?

• A. $C_8{H}_{10}$
• B. $C_6{H}_6$
• C. $C_8{H}_{12}$
• D. $C_6{H}_{14}$

Answer 1

The correct option is A $C_8{H}_{10}$

When benzene is treated with ethyl chloride in the presence of anhydrous aluminium chloride, the product formed is $C_8{H}_{10}$.

This reaction is known as Friedel-Craft alkylation reaction.

Benzene reacts with alkyl halide in the presence of anhydrous $AlC{l}_3$ to give alkyl benzene $(C_6{H}_5-C_2{H}_5)$ as the product.

The reaction is as follows:

$C_2{H}_5-Cl+C_6{H}_6\stackrel{Anhy.AlC{l}_3}{\to }{C}_8{H}_{10}+HCl$

Option A is correct.