First slide

Theory of dilute solutions

Question

For a non-volatile solute

Moderate

A

The vapour pressure of a solute is zero.
B

Vapour pressure of solution = Vapour pressure of pure solvent.
C

Vapour pressure of solution = Vapour pressure of solvent in solution.
D

All of these.

Solution

Its vapor pressure is very less or negligible than the vapor pressure of the solvent.
Hence, the vapor pressure of solute is zero as no solute particles are going in the vapor phase.
Vapor pressure of solution = vapor pressure of solvent in solution + vapor pressure of Solute
vapor pressure of Solute = 0
Hence,
Vapor pressure of solution = vapor pressure of solvent in solution

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