Chlorobenzene on heating with \(NH_3\)under pressure in the presence of cuprous chloride gives
Answer & explanation
Correct answer: option 2
The correct answer is (2) Aniline.
When chlorobenzene is heated with ammonia under pressure in the presence of cuprous chloride, it undergoes a reaction called diazotization. In this reaction, the ammonia molecule acts as a nucleophile and attacks the carbon atom of the chlorobenzene molecule. The chlorine atom is then displaced by the amino group, forming aniline.
The reaction is shown below:
Aniline is a colorless, oily liquid with a strong odor. It is used in the production of dyes, drugs, and pesticides.
The other options are incorrect.
- Nitrobenzene is formed when benzene is treated with nitric acid and sulfuric acid.
- Benzamide is formed when benzoic acid is treated with ammonia.
- o- and p-chloroaminobenzene are formed when chlorobenzene is treated with ammonia in the absence of cuprous chloride.