The boiling point of an azeotropic mixture of water - ethanol is less than that of both water and ethanol. Then:

Options

A. The solution is highly saturated.
B. Positive deviation from Raoult's law.
C. Negative deviation from Raoult's law.
D. Nothing can be said.

Answer

B

Explanation

Positive deviation from Raoult's law are noticed when
Experimental value of vapour pressure of mixture is more than calculated value.
Experimental value of boiling point of mixture is less than the calculated value.
`Delta_("mixing")H = +ve`
`Delta_("mixing")V = +ve`