Abstract
Limited experimental data of the aqueous ternary CuSO4-H2SO4-H2O system hinders the modelling of its thermodynamic properties. Although different mixing rules for predicting the behavior of mixed electrolyte solutions have been proposed in the literature, significant deviations from them can be expected for systems where e.g., changes in speciation occur. In this work, freezing points of the ternary aqueous solutions were measured using a purpose-built apparatus. The measured samples spanned the concentration range 0.0140 to 0.5534 mol·(kg-H2O)–1 at four different CuSO4–to–H2SO4 ratios. The experimental results were compared with Zdanovskii’s rule predictions.
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