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Q.16 On dissolving 0.5 g of a non-volatile non-ionic solute to 39 g of benzene, its vapor pressure
decreases from 650 mm Hg to 640 mm Hg. The depression of freezing point of benzene (in K)
upon addition of the solute is
(Given data: Molar mass and the molal freezing point depression constant of benzene are 78 g
mol and 5.12 K kg mol', respectively)


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