A Study of the Absolute Entropy of the Chloride Ion in Concentrated Solutions as Determined by Thermocell Measurements

Abstract

This research was undertaken as a corollary to the work done by E . S. McKee (1) at Johns Hopkins University in 1950 with the purpose of "determining the entropy of a single aqueous ion. In doing so, we wished to elucidate the theory of aqueous solutions, i. e. hydration and other processes taking place, particularly in concentrated solutions. . . . Almost no results have been reported for very concentrated solutions, i. e. 1m to saturation, and that was the specific aim of this research. Processes occurring in concentrated aqueous solutions of ionic compounds are of great importance, particularly solvation of ions, and, with regard to a theoretical or empirical modification of the Debye and Huckel theory, hydration and ion-pair formation. The study of the function of one tbermodynamic quantity of a single aqueous ion with respect to concentration and type of cation should prove useful. [From Introduction]