Example 05.05 Temperature Dependence of the Activity Coefficients
problem:
Estimate the activity coefficients for the system ethanol (1) - water (2) at theta = 50 °C using the experimental excess enthalpy data of Larkin assuming that the excess enthalpy is independent of temperature.
general
constants
and
definitions:
input data
Liquid and vapor mole fractions, temperature, pressure
Activity coefficients at theta= 70°C
Partial molar excess enthalpies:
Solution
Calculation of the activity coefficients at theta = °C