Solution: At 25oC the vapor pressure of pure butane (C4H10, MW = 58.12 g/mol) is p°b = 380.0 torr and the vapor pressure of pure hexane (C6H14, MW = 86.17 g/mol) is p°H = 32.0 torr. What is the total pressure a

At 25^{o}C the vapor pressure of pure butane (C_{4}H_{10}, MW = 58.12 g/mol) is p°_{b} = 380.0 torr and the vapor pressure of pure hexane (C_{6}H_{14}, MW = 86.17 g/mol) is p°_{H} = 32.0 torr. What is the total pressure at 25^{o}C when mixing equal grams of butane and hexane?