When a substance is dissolved in a solvent, the vapour pressure of solvent decreases. It brings:

Question

When a substance is dissolved in a solvent, the vapour pressure of solvent decreases. It brings: (A) a decrease in boiling point of the solution (B) an increase in boiling point of the solution (C) a decrease in freezing point of the solution (D) an increase in freezing point of the solution

Tardigrade Admin · Accepted Answer

Boiling point propto (1/ text vapour pressure ) Hence, when we decrease the vapour pressure, boiling point increases.

Q. When a substance is dissolved in a solvent, the vapour pressure of solvent decreases. It brings:

a decrease in boiling point of the solution

an increase in boiling point of the solution

a decrease in freezing point of the solution

an increase in freezing point of the solution

Boiling point $\propto \frac{1}{vapour pressure}$
Hence, when we decrease the vapour pressure, boiling point increases.

Q. When a substance is dissolved in a solvent, the vapour pressure of solvent decreases. It brings:

a decrease in boiling point of the solution

an increase in boiling point of the solution

a decrease in freezing point of the solution

an increase in freezing point of the solution

Boiling point ∝ vapour pressure 1​ Hence, when we decrease the vapour pressure, boiling point increases.

Boiling point $\propto \frac{1}{vapour pressure}$
Hence, when we decrease the vapour pressure, boiling point increases.