Question

The relative _______ of vapour pressure of a dilute solution containing non-volatile solute is equal to mole fraction of _______ present in the solution.

A) Lowering, solvent
B) Enhancing, solvent
C) Lowering, solute
D) Enhancing, solute

Answer 1

Answer:

The relative lowering of vapour pressure of a dilute solution containing non-volatile solute is equal to mole fraction of solute present in the solution.

I hope it helps you.

Answer 2

The correct answer is option (C) Lowering, solute.

- The relative lowering of vapour pressure of a dilute solution containing non-volatile solute is equal to mole fraction of solute present in the solution.

- Mathematically relative lowering of vapour pressure can be expressed as:

(P° - P) / P° = X (solute)

where:

P° = Vapour pressure of pure solvent

P = Vapour pressure of solution

X = Mole fraction of non- volatile solute.