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Grade: 12


The vapour pressure of two pure liquids A nd B that forms an ideal soln. is 300 and 800 torr. respectively at temperature T. A mixture of the vapours of A and B for which the mole fraction of A is 0.25 is slowly compressed at Temperatur T.Calculate: 1.The composition of the first drop of the condensate:- a.8/17,9/17 b.4/13,7/13 2.The total pressure when this drop formed:- a.475 torr .b.565 torr 3.The composition of the solution whose normal boiling Point is T: a.0.4,0.6 b.0.08,0.92 The pressure when only the last bubble of vapour remains. a. 765 torr c.675 torr

11 years ago

Answers : (1)

879 Points

Dear student,

Use the formula,


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