Abstract

A new method for the calculation of solubility curves in solubility diagrams of ternary salt systems with compound formation is described. The method is based on the assumption that every physico-chemical process (the formation of a solid phase, formation of complex species in solution) in a given system is characterized by an interaction constant value. The relative magnitudes of these constants determine the type and shape of the diagram. The derivation does not include any empirical or adjustable parameters. The work also contains an explanation for the incongruent solubility of compounds with salt character. The conclusion contains extensive comparison of experimental data with the theoretical results.

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