Question

Select the incorrect statement.

• A. Solution of chloroform and acetone shows negative deviation from Raoult's law
• B. Solution of ethanol and acetone shows positive deviation from Raoult's law
• C. In case of solution of phenol $A$ and aniline $B$, $A-A$ and $B-B$ interactions are stronger than $A-B$ (i.e. phenol and aniline) interactions
• D. Azeotropes are constant boiling mixtures, which are separated by azeotropic distillation.

Answer 1

Answer: (C)

In the mixture of phenol and aniline, the intermolecular hydrogen bonding between phenolic proton and lone pair on nitrogen atom of aniline is stronger than the respective intermolecular hydrogen bonding between similar molecules.