In a hexane-octane solution containing 27.50 grams hexane and 42.5 grams of octane at 20°C, the total pressure above the solution is 78.54 mmHg. At the same temperature, the vapor pressures of pure hexane and octane are 74.61 torr and 76.13 torr, respectively. Calculate (a) the activity coefficients of hexane and octane at this concentration and (b) the free energy of mixing to be expected for a corresponding ideal solution.

In a hexane-octane solution containing 27.50 grams hexane and 42.5 grams of octane at 20°C, the total pressure above the solution is 78.54 mmHg. At the same temperature, the vapor pressures of pure hexane and octane are 74.61 torr and 76.13 torr, respectively. Calculate (a) the activity coefficients of hexane and octane at this concentration and (b) the free energy of mixing to be expected for a corresponding ideal solution.

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter13: The Chemistry Of Solutes And Solutions

Section13.7: Colligative Properties Of Solutions

Problem 13.10PSP: The vapor pressure of an aqueous solution of urea. CH4N2O, is 291.2 mmHg at a measured temperature....

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