Correlation of mean ionic activity coefficient using a two-parameters model

Abstract

In this study, a two-parameters model is presented based on the solvation phenomena. Using this model, the mean ionic activity coefficients of 146 salts and activity coefficients of individual ions of some 1 : 1 and 1 : 2 salts have been correlated successfully. The results of the present model have been compared with the Khoshkbarchi–Vera model and three-characteristic parameter correlation model of Lin and Lee model. These comparisons show that the present model predicts the mean ionic activity coefficient better than others.

Keywords:

• Aqueous electrolytes
• Mean ionic activity coefficient
• Individual activity coefficient