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

✍ Scribed by Hendrick C. Van Ness; Stanley M. Byer; Richard E. Gibbs

• Publisher: American Institute of Chemical Engineers
• Year: 1973
• Tongue: English
• Weight: 719 KB
• Volume: 19
• Category: Article
• ISSN: 0001-1541
• DOI: 10.1002/aic.690190206

✦ Synopsis

Part 1. 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 x-y data. In any case, effective use of a full Y-x-y data set can be made only if redundent experimental values of x,y, or P are compared for consistency with calculated values. This cannot be accomplished by means of the popular area test for thermodynamic consistency.