If the elevation in boiling point of a solution of non-volatile, non-electrolytic and non-associating solute in solvent (Kb = xK.kg.mo-1 ) is y K, then the depression in freezing point of solution of same concentration would be:Kf of the solvent =zK⋅kg⋅mol−1

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2xzy

yzx

xzy

yz2x

answer is B.

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Detailed Solution

ΔTb=Kb×m∴m=yx ....(1)∴ΔTf=Kfm .....(2)ΔTf=yxz

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