It was shown in Chap. 2 that the basic equation ot equilibrium between two phases α and β, at the same temperature, is given by equality of fugacities for any component i in these phases:
In many cases one of the phases is a gaseous mixture; in this chapter we discuss methods for calculating the fugacity of a component in such a mixture.
Formal thermodynamics for calculating fugacities from volumetric data was discussed in Chap. 3; the two key equations are:
where the fugacity coefficient ...