On the experimental determinations of ionic activity coefficients

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• 作者：Francesco Malatesta
• 关键词：Activity ; Activity coefficients ; Ionic activity coefficients ; Ions ; Ion selective electrodes ; Junction potential ; Potentiometry
• 刊名：Fluid Phase Equilibria
• 出版年：2006
• 期刊代码：32_03783812
• 类别：ce
• 出版时间：5 January 2006
• 卷：239
• 期：1
• 页码：120-124
• 文件大小：97 K

摘要

A paper has recently been published by G. Wilczek-Vera and J.H. Vera [G. Wilczek-Vera, J.H. Vera, Fluid Phase Equilbr. 236 (2005) 96–110], to corroborate their belief that ion activity coefficients can be measured, and to rebut opposing arguments. The present analysis, which deduces exact equations valid for any kind of cell in terms of electrolytes instead of constituent ions, reverses their conclusions and confirms that Vera and collaborators have for many years published, as experimental values of ionic activity coefficients, other no-better-identified quantities with no relationship to the unknown values of the real ionic activity coefficients.