Question

Chlorobenzene reacts with bromine gas in the presence of Anhydrous AlBr_3 to yield p-Bromochlorobenzene. This reaction is classified as 
 

• A. Nucleophilic substitution reaction
• B. Electrophilic substitution reaction
• C. Addition reaction
• D. Elimination reaction

Hint:

In electrophilic substitution reactions, an electrophile attacks a benzene ring and replaces a hydrogen atom with a substituent, such as bromine.

Answer 1

The Correct Option is B

In this reaction, chlorobenzene reacts with bromine (Br₂) in the presence of AlBr₃ (an anhydrous catalyst), leading to the substitution of one hydrogen atom of the benzene ring with a bromine atom. This is a classic example of an electrophilic substitution reaction, where the bromine acts as the electrophile and the reaction occurs at the para position of the benzene ring. The role of AlBr₃ is to activate the bromine molecule, facilitating the substitution.
Thus, the correct answer is: \[ \text{Electrophilic substitution reaction.} \]