On the basis of information given below mark the correct option. Information : On adding acetone to methanol some of the hydrogen bonds between methanol molecules break.

Options

A. At specific composition methanol - acetone mixture will form minimum boiling azeotrope and will show positive deviation from Raoult's law.
B. At specific composition methanol - acetone mixture forms maximum boiling azeotrope and will show positive deviation from Raoult's law.
C. At specific composition methanol - acetone mixture will form minimum boiling azeotrope and will show negative deviation from Raoult's law.
D. At specific composition methanol - acetone mixture will form maximum boiling azeotrope and will show negative deviation from Raoult's law.

Answer

A

Explanation

Explanation : (A) (A-A) or (B-B) interactions are stronger than the (A-B) interactions , where, A is methanol molecule & B represents a molecule of acetone. It means that in this solution molecules of A (or B) will find it easier to escape. This will increase the vapour from Rault.s law. Further,
(B) Due to this positive deviation the methanol acetone mixture forms minimum boiling azeotrope.