Benzene and Toluene Form an Ideal Solution

Multiple Choice

Benzene and toluene form an ideal solution.At 298 K,what is the mole fraction of benzene in the liquid that is in equilibrium with a vapor that has equal partial pressures of benzene and toluene? At 298 K,the vapor pressures of pure benzene and pure toluene are 95 and 28 torr,respectively.

A) 0.50
B) 0.77
C) 0.23
D) 0.30
E) none of these