Q.

which solution will show greater relative lowering of vapour pressure when equal mass of each of the following non electrolyte is separately dissolved in equal quantity of same solvent?

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Solute A (Mol.wt = 60)

Solute B(Mol.wt = 90)

Solute C(Mol wt =180)

Solute D (Mol wt = 100)

answer is A.

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Detailed Solution

Solution in which lower molecular weight has been dissolved shows greater relative lowering of vapour pressure because moles are more.

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