Unformatted text preview: pure A is 180 Torr and that of pure B is 82.1 Torr. If the mole fraction of A in the vapor is 0.450, what is the mole fraction of A in the solution? 3. A and B form an ideal solution. At a total pressure of 0.900 bar, A g x = 0.450 and A l x = 0.650. Using this information, calculate the vapor pressure of pure A and of pure B. 4. The partial molar volumes of water and ethanol in a solution with 2 H O x = 0.60 at 25C are 17.0 and 57.0 cm 3 mol 1 , respectively. The densities of water and ethanol are 0.997 and 0.7893 g cm 3 , respectively, at this temperature. Calculate the volume change upon mixing sufficient ethanol with 2.00 mol of water to give this concentration. 5. An ideal solution is composed of 5.00 mol of benzene and 3.25 mol of toluene. Calculate mix G and mix S at 298 K and 1 bar pressure. Is mixing spontaneous?...
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 Fall '08
 Cuckier
 Ideal solution

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