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.
Chapter84: Fractional Distillation, Azeotropes
Section: Chapter Questions
Problem 1P
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![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.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5e5debf9-b1be-41dc-ad79-1ab4bccdfdaf%2F36016ab5-c301-41c0-bc22-0118054c1c44%2Fwo3ga8_processed.jpeg&w=3840&q=75)
Transcribed Image Text: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.
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