Association concepts in electrolyte solutions

✍ Scribed by H. Krienke; J. Barthel

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 612 KB
• Volume: 78
• Category: Article
• ISSN: 0167-7322
• DOI: 10.1016/s0167-7322(98)00087-7

✦ Synopsis

Association in electrolyte solutions is investigated as a part of the thermodynamic and transport excess functions in the framework of different theoretical approaches, and the influence of solvent-averaged short range interactions between ions on the association constant is discussed. The low concentration chemical model (lcCM) is compared with results of the MSA theory for equilibrium and nonequilibrium situations for models which include interactions with ion pairs. At the limit of strong electrostatic association a parameter-free theory is derived for ion pairs made up by ions of different diameters. The limitations of the models, and the inherent approximations of the theories are discussed.