At a given temperature the vapor pressures of benzene and toluene are 183 mm Hg and 59.2 mmHg, respectively. Calculate the total vapor pressure over a solution of benzene and toluene with Xbenzene= 0.600.   A)110 mm Hg   B)242 mm Hg    C)133 mm Hg      D)121 mm Hg

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A: Mole fraction of benzene, Xb = 0.580. Therefore, mole fraction of toluene, Xt = 1- 0.580 = 0.42

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