Vapor‐Liquid equilibrium: Part I. An appraisal of data reduction methods

Correlations of the excess Gibbs function and the activity coefficients of a binary, liquid‐phase system at constant temperature depend on reduction of P ‐x‐y data taken for the system in vapor‐liquid equilibrium. It is shown that use of a full P ‐x‐y data set is for all practical purposes based on just the P ‐y values. Alternative procedures require only P ‐x or P ‐y data. In any case, effective use of a full P ‐x‐y data set can be made only if...