MSA MODELS OF ION ASSOCIATION IN ELECTROLYTE-SOLUTIONS

The subject of the investigation is the role of ion association in ele ctrolyte solutions with and without the inclusion of the dipolar inter action of ion pairs. The corresponding chemical models in the mean sph erical approximation (MSA) on MM level, and a physical model which - i n the limit of strong electrostatic association - yields a parameter-f ree theory, are used to calculate thermodynamic excess functions. The model calculations are compared with experimental results.