Biphenyl, C₁₂H₁₀, is a nonvolatile, nonionizing solute that is soluble in benzene, C₆H₆. At 25°C, the vapor pressure of pure benzene is 100.84 Torr. What would be the vapor pressure of a solution formed by dissolving 19.7 g of biphenyl in 30.3 g of benzene?
