Example 1.2 Calculate the vapor and liquid compositions in equilibrium at 95°C for benzene-toluene using the vapor pressure from the table below at 101.32 kPa. Table1.1-Vapor-Pressure and Equilibrium-Mole-Fraction Data for Benzene/Toluene System. = (Answer: ya 0.632) Vapor Pressure . Table 1.1 Vapor Pressure Temperature Benzene, P* Toluene, P** Mole Fraction Benzene at B T 101.325 kPa kPa XB YB K kPa 353.3 101.32 358.2 116.90 46.0 363.2 135.50 54.0 368.2 155.70 63.3 373.2 179.20 74..3 378.2 204.2 86.0 383.2 240.00 101.32 Sample Calculation: Hint: For an ideal liquid mixture of two liquids A and B show that: Page 9 of 22 XA (P-PB*)/(PA-PB*)