At 25degc the vapour pressure of pure pentane is 511 torr, Ask an Expert

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At 25°C the vapour pressure of pure pentane is 511 torr and that of hexane is 150. torr.

What is the mole fraction of pentane in a pentane-hexane solution that has a vapour pressure of 345 torr at 25°C?

What is the mole fraction of hexane in the vapour that is in equilibrium with this solution?

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