Answer
We know that the methanol has a lower boiling point as compared to water, hence it is more volatile due to which the total vapor pressure of the solution increases than the vapor pressure of pure water at the same temperature and Raoult's law is not applicable to volatile solutes like methanol.
Work Step by Step
We know that the methanol has a lower boiling point as compared to water, hence it is more volatile due to which the total vapor pressure of the solution increases than the vapor pressure of pure water at the same temperature and Raoult's law is not applicable to volatile solutes like methanol.
