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Chem 116 - General Chemistry II

Vapor Pressure Calculations

Vodka Vapor Pressure

A vodka sample contains 46 g of C2H5OH (vapor pressure of pure C2H5OH is 61.2 mm Hg, M.W. of C2H5OH is 46.06 g/mol) and 72 grams of water (vapor pressure of pure water is 23.8 mm Hg). Calculate the vapor pressure of the vodka sample. What was the mole fraction of C2H5OH in the vapor of the vodka?

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