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Liquids X and Y form an ideal solution. ...

Liquids `X` and `Y` form an ideal solution. The vapour pressure of `X` and `Y` at `100^(@)C` are `300` and `100 mm` of `Hg`, respectively. Suppose that a solution composed of `1 mol` of `X` and `1 mol` of `Y` at `100^(@)C` is collected and condensed. This condensate is then heated at `100@C` and vapour is again condensed to form a liquid `A`. What is the mole fraction of `X` in `A` ?

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