Excess Gibbs Function from Measurement of Vapor Pressure

2 EXCESS GIBBS FUNCTION FROM MEASUREMENT OF VAPOR PRESSURE 

Although the description of deviations from ideality in terms of the excess Gibbs function gives us one quantity instead of the two activity coefficients of the two components of a binary solution, we still need to calculate the activity coefficients first, as observed in Equation (16.57). 

DETERMINATION OF NONELECTROLYTE ACTIVITIES AND EXCESS GIBBS FUNCTIONS 

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