By measuring the equilibrium between liquid and vapor phases of a binary solution at 30°C at 1atm, it was found that xA=0.220 when yA=0.314. Calculate the activities and activity coefficients of both components in the solution. The vapor pressures of the pure components at this temperature are 73kPa and 92.1kPa.

Explanation:

From the knowledge of liquid and vapor phases

is the mole fraction in the liquid

is the mole fraction in the vapor

Given that :

= 0.314

using the formula:

To calculate the activities and activity coefficients of both components in the solution; we have:

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