液体简单混合物 Simple liquid mixtures 拉乌尔定律 Raoult'sLaw After experimenting with mixtures of similar liquids, the French chemist Francois Raoult found that the ratio of the partial vapour pressure of each component to its vapour pressure as a pure liquid, pApA is approximately equal to the mole fraction of a in the liquid mixture APA Some mixtures obey pay Total pressure Raoult's law very 60 closely, especially hen they are Total structurally similar- 3 these are called ideal g Benzene Partial solutions, and they pressure obe 20F Methylbenzene Partial H+ RT In x pressure of B 0 Mole fraction of A Mole fraction of methylbenzene, X(C6H5CH3 Ideal binary mixture Mixture of benzene and toluene液体简单混合物 Simple Liquid Mixtures 拉乌尔定律 Raoult’s Law