The vapour pressure of pure liquid 'A' at 310C is 120 torr. The vapour pressure of...

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The vapour pressure of pure liquid 'A' at 310°C is 120 torr. The vapour pressure of this liquid in solution with liquid B is 72 torr. Calculate the mole fraction of 'A' in solution if the mixture obeys Raoult's law. (a) 0.06 (b) 0.9 (d) 0.6 (c) 0.3 The vapour pressure of pure liquid 'A' at 310°C is 120 torr. The vapour pressure of this liquid in solution with liquid B is 72 torr. Calculate the mole fraction of 'A' in solution if the mixture obeys Raoult's law. (a) 0.06 (b) 0.9 (d) 0.6 (c) 0.3