Benzene,C₆H₆,and Toluene,C₆H₅CH₃,form Ideal Solutions

question 6

Multiple Choice

Benzene,C₆H₆,and toluene,C₆H₅CH₃,form ideal solutions.At 35°C the vapor pressure of benzene is 160.torr and that of toluene is 50.0 torr.In an experiment,3.9 mol of benzene and 5.7 mol of toluene are placed in a closed container at 35°C and allowed to come to equilibrium.What is the mole fraction of toluene in the vapor phase?

• A)0.52
• B)0.69
• C)0.31
• D)0.12
• E)0.60

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