A Mixture of Pentane and Hexane Has a Vapour Pressure

question 124

Multiple Choice

A mixture of pentane and hexane has a vapour pressure of 241 Torr. Calculate the mole fraction of pentane in the mixture. The vapour pressures of pure pentane and hexane are 425 Torr and 151 Torr, respectively. Assume ideal behaviour.

• A) 0.620
• B) 0.672
• C) 0.380
• D) 0.328
• E) 0.500

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