1. When mixing 10 g of benzene, 10 g of toluene and 10 g of naphthalene, a homogeneous solution is formed. How many grams of toluene will evaporate when 10 liters of air is passed through the solution at 30 C, assuming that the solution is ideal? At this temperature, toluene has a vapor pressure of 36.7 mm. rt. Art., benzene 118.5 mm. rt. Art., and the vapor pressure of naphthalene can be neglected.

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