Question

What type of azeotrope will be formed by a solution of benzene and chloroform? Give reason.

Hint:

Negative deviation → Maximum boiling azeotrope. Positive deviation → Minimum boiling azeotrope.

Answer 1

Benzene and chloroform form a
maximum boiling azeotrope.
Reason:

• Strong intermolecular attraction due to hydrogen bonding between: \[ C_6H_6 \cdots H{-}CCl_3 \]
• Negative deviation from Raoult’s law.
• Lower vapour pressure → higher boiling point.

Answer: Maximum boiling azeotrope due to strong intermolecular interactions and negative deviation.