Calculate the total pressure and the composition of the vapours (mole %) in equilibrium at 60 °C with a well agitated mixture containing 870 kg H2O, 509 kg NacI (all dissolved) and 750 kg benzene. Assume that the NaCl and water are both totally insoluble in benzene. Vapour pressure data at 60 'C. P'benzene = 390 mmHg P'water = 160 mmHg

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