Predict the properties of aqueous mixed electrolyte solutions from properties of the individual electrolyte solution

For calculating the thermodynamic properties of mixed electrolyte solutions, a thermodynamic framework is developed. The vapor pressure, density and osmotic coefficient of several mixed electrolyte solutions are predicted and compared with the experimental data and the prediction of other models. The agreement is quite good. The average of absolute error is 0.1 % for predicting the vapor pressure and density of electrolyte solutions and 1.3 % for predicting the osmotic coefficient.