Question

State True or False.

Lowering of vapour pressure is proportional to the mole fraction of the solute.

• A. True
• B. False

Answer 1

The correct option is A True

The given statement is true.
Lowering of vapour pressure is proportional to the mole fraction of the solute.
$\frac{\Delta P}{P}=X$
Here, $\Delta P$ is the lowering of the vapour pressure, P is the vapour pressure of pure solvent and X is the mole fraction of solute.