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Two liquids A and B form an ideal soluti...

Two liquids `A` and `B` form an ideal solution such that `p_(A)^@ = 700 mm` and `p_(B)^@ = 300 mm`. A small amount of solution is vapourized and the vapour condensed (at equilibrium). The condensate has equilibrium vapour pressure of `500 mm` (at same temperature). Find the composition of the original solution.

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