Question

What is the cause of higher boiling point of a solution than that of pure solvent???

Answer 1

Explanation:

The boiling point of a solution, then, will be greater than the boiling point of the pure solvent because the solution (which has a lower vapor pressure) will need to be heated to a higher temperature in order for the vapor pressure to become equal to the external pressure (i.e., the boiling point).

Answer 2

Answer:

The reason behind this is that vapour pressure of solution is always less than vapour pressure of pure solvent and boiling point is the temperature at which vapour pressure becomes equal to the atmospheric pressure.Therefore the boiling point of solution will be higher than boiling point of pure solvent.