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The relative lowering of vapour pressure...

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

A

Solute molecules and solvent molecules

B

Solute molecules and the total molecules in the solution

C

Solvent molecules and the total molecules in the solution

D

Solvent molecules and the total number of ions of the solute

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The correct Answer is:
B
The relative lowering of the vapour pressure of dilute solution is equal to the mole fraction of the solute molecule present in the solution.
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