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Solutions of benzene and toluene obey Raoult's law. The vapor pressures at 20C are: benzene, 76 ...

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Solutions of benzene and toluene obey Raoult's law. The vapor pressures at 20C are: benzene, 76 ...

Solutions of benzene and toluene obey Raoult's law. The vapor pressures at 20°C are: benzene, 76 torr; toluene, 21 torr.

What is the mole fraction of benzene in a benzene-toluene solution whose vapor pressure is 57 torr at 20°C?

Reference: Ref 11-2

▸ 0.22

▸ 0.38

▸ 0.62

▸ 0.72

▸ 0.78

Textbook

Chemistry: An Atoms First Approach

Edition: 3^rd

Authors: Zumdahl, DeCoste

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