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Total vapor pressure of mixture = P(benzene) + P(toluene) Ptotal =
X(benzene)(Pbenzene pure) + X(toluene)(Ptoluene pure) X = mole fraction Ptotal = (7.97 /(7.97
+ 5.90))380 + (5.90/(7.97 + 5.90)) 130 Ptotal = 0.575(380) + 0.425(130) = 274 torr
Solution
Total vapor pressure of mixture = P(benzene) + P(toluene) Ptotal =
X(benzene)(Pbenzene pure) + X(toluene)(Ptoluene pure) X = mole fraction Ptotal = (7.97 /(7.97
+ 5.90))380 + (5.90/(7.97 + 5.90)) 130 Ptotal = 0.575(380) + 0.425(130) = 274 torr

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Total vapor pressure of mixture = P(benzene) + P(.pdf

  • 1. Total vapor pressure of mixture = P(benzene) + P(toluene) Ptotal = X(benzene)(Pbenzene pure) + X(toluene)(Ptoluene pure) X = mole fraction Ptotal = (7.97 /(7.97 + 5.90))380 + (5.90/(7.97 + 5.90)) 130 Ptotal = 0.575(380) + 0.425(130) = 274 torr Solution Total vapor pressure of mixture = P(benzene) + P(toluene) Ptotal = X(benzene)(Pbenzene pure) + X(toluene)(Ptoluene pure) X = mole fraction Ptotal = (7.97 /(7.97 + 5.90))380 + (5.90/(7.97 + 5.90)) 130 Ptotal = 0.575(380) + 0.425(130) = 274 torr