MHT CET Chemistry question

The lowering of vapour pressure of a solvent by the addition of a non-volatile solute to it, is directly proportional to

(A)The product of vapour pressure of pure solvent and mole fraction of the non-volatile soluteCorrect
(B)The product of vapour pressure of pure solvent and mole fraction of the pure solvent
(C)The sum of vapour pressure of pure solvent and mole fraction of the non-volatile solute
(D)The sum of vapour pressure of pure solvent and mole fraction of the pure solvent

Answer: (A)

Solution

, which is the product of the pure solvent vapour pressure and solute mole fraction;

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Question ID VK-060961