The relative lowering of the vapour pressure is equal to th…

Chemistry Solution & Colligative Properties NCERT Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 14, 2026

The relative lowering of the vapour pressure is equal to the ratio between number of

solute molecules to the solvent molecules

solute molecules to the total molecules in the solution

solvent molecules to the total molecules in the solution

solvent molecules to the total number of ions of the solute

Text Solution

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The correct answer is:

(difference in V.P. of pure solvent and solution) lowering in V.P. (1)

Now, . of pure solvent (2)

By dividing (1) and (2) we ger,

which is relative lowering in V.P.

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