Question

An aqueous solution of methanol in water has vapour pressure
(a) equal to water
(b) equal to methanol
(c) more than water
(d) less than that of water.​

Answer 1

Answer-

Option C is the answer

Explanation:

Methanol and water form hydrogen bonds between them. This hydrogen bonding is stronger than that between methanol molecules but the interactions are not as extensive as in water. Thus, it has a vapour pressure lower than methanol and higher than water.