Abstract
The thermodynamic properties of the dilute solutions of the chromium chlorides were determined in the solvents, , , or their equimolar mixtures between approximately 973 and 1173 K using an EMF technique. Galvanic and redox cells with reference electrodes were used. The cells are described byandwhere ACl represents the alkali chloride solvent. The thermodynamic properties imply highly nonideal systems in which the formation of complex species is indicated. A reacting system consisting of Cr metal immersed in a solution was studied potentiometrically. It was found that when the redox reactions were completed, all potentials assume a common value. This potential could be calculated using a simple mass balance and the formal potential for Cr/Cr2+ and Cr2+/Cr3+systems determined in this study.
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