Activities in Ga<SUB>2</SUB>(SO<SUB>4</SUB>)<SUB>3</SUB>-H<SUB>2</SUB>SO<SUB>4</SUB>-H<SUB>2</SUB>O Solution System
Chikabumi YamauchiToshiharu FujisawaHiroshi Sakao
Abstract
The mean ionic activity coefficients of Ga2(SO4)3 for the binary system Ga2(SO4)3-H2O and the activities of water for the ternary system Ga2(SO4)3-H2SO4-H2O were determined by using the electrochemical and isopiestic methods, respectively, at 298 K. The water activities satisfactorily obey the Zdanovskii’s empirical rule. From the results obtained, the mean ionic activity coefficients of the solutes for the ternary system were calculated by applying the Mckay-Perring method. Furthermore, the applicability of the Meissner’s empirical procedure to estimate the mean ionic activity coefficients of Ga2(SO4)3 and H2SO4 and that of the Robinson-Bower equation to evaluate the water activity to the present ternary solution system were also discussed.
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