Thermodynamics study of the Cs2SO4-MgSO4-H2O system at the temperature 298.15 K

The Pitzer ion-interaction model has been used for thermodynamics simulation of the ternary system Cs2SO4-MgSO4-H2O at 298.15 K. The Pitzer ternary mixing parameter \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ \psi _{CsMgSO_4 } $$\end{document} and thermodynamic characteristics for double salt Cs2SO4 · MgSO4 · 6H2O have been calculated and the theoretical solubilities isotherm has been plotted.