Question

Vapour pressure of a solution of a non-volatile solute is always ______

Options

• equal to the vapour pressure of the pure solvent

• higher than the vapour pressure of the pure solvent

• lower than the vapour pressure of the pure solvent

• constant

Answer 1

The Vapour pressure of a solution of a non-volatile solute is always lower than the vapour pressure of the pure solvent.

Explanation:

When a non-volatile solute is dissolved in a liquid solvent, the resulting solution's vapour pressure decreases.