if two liquids A and B form minimum boiling azeotrope at some specific composition then ____

Options

A. A-B interactions are stronger than those between A-A or B-B interactions.
B. vapour pressure of solution increases because more number of molecules of liquids A and B can escape from the solution.
C. vapour pressure of solution decreases because less number of molecules of only one of the liquids escape from the solution.
D. A-B interactions are weaker than those between A-A or B-B.

Answer

D

Explanation

Minimum boiling azeotrope is formed when actual vapour pressure is higher than expected or when solution shows positive deviations from Raoult.s law, i.e., when A - B interactions are weaker than A - A and B-B interactions.