12. Based on the total pressure and composition of the vapor in equilibrium with the boiling liquid given on page 225, determine the activity and activity factor in the liquid phase of component A for a given composition of the liquid phase and a given temperature. Calculate using the Clausius-Clapeyron equation, based on the reference data, the saturation vapor pressure P0A over component A. Determine the change in the chemical potential during the formation of a solution at a given concentration and temperature.
variant System R*10-4, Pa Molar fraction A, % T, K
12 C3H6O-C6H6 10.000 4.0 348.2

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