Question

58. The vapour pressure of pure benzene is
640 mm at 298K. A solution of a solute in
benzene shows a vapour pressure of 630 mm
at the same temperature. Then the mole
fraction of the solute is
1) 0.016 2) 0.18 3) 0.20 4) 0.25
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Answer 1

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Answer 2

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