A classical representation for a mass based chemical potential
The objective was to obtain an explicit functional representation for the chemical potential of ideal and mildly non-ideal constituents of a mixture when mass fraction concentrations are used as the composition variables. This objective has been achieved by converting the classical logarithmic chemical potential and molar compositions into an equivalent mass based relationship. A polynomial expansion in mass fraction concentrations is written for the activity coefficient of mildly non- ideal constituents, and the coefficients of the polynomial are simplified by requiring the new potential to satisfy an appropriate set of Maxwell reciprocity and Gibbs-Duhem relationships. Some approximations for the mass based potential and its spatial gradient are also obtained for varying degrees of diluteness.
Maxwell reciprocity and Gibbs-Duhem relationships
scientific article; zbMATH DE number 446820