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The vapour pressure at a given temperature of an ideal solution containing 0.2 mol of non-volatile solute and 0.8 mol of a solvent is 60 mm of Hg. The vapour pressure of the pure solvent at the same temperature will be

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By Expert Faculty of Sri Chaitanya
a
120 mm Hg
b
150 mm Hg
c
60 mm Hg
d
75 mm Hg

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detailed solution

Correct option is D

P°A-60P°A= XB=0.2⇒P°A = 75 mm Hg


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