64 g non-volatile solute is added to 702 g benzene. The vapour pressure of benzene has decreased from 200 m m of H g to 180 m m of H g . Molecular weight of the solute is

Question

64 g non-volatile solute is added to 702 g benzene. The vapour pressure of benzene has decreased from 200 m m of H g to 180 m m of H g . Molecular weight of the solute is, 128, 64, 96, 256

MARKS App · Accepted Answer

V . P . has decreased by 10 % This happens only when 9 m o l e s solvent & one mole solute are present 702 g benzene = 9 m o l e s 64 g = 1 m o l e

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