Effect of the oxidation state of copper on the solution-solid phase equilibria in CuClx-MCl-H2O systems

L. V. Stepakova, M. Yu Skripkin, L. V. Chernykh, I. M. Gusev

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The effect of the oxidation state of the metal on the solubility was analyzed using the example of CuClx-MCl-H2O (x = 1, 2; M = Li-Cs, NH4) ternary systems. The prevalence of acido complex formation is responsible for an essential similarity of the solubility isotherms: the presence of crystallization branches of complex salts and salting-in (or weak salting-out) of copper(I) and (II) chlorides, that increases in the order LiCl < NaCl < KCl < CsCl. The different stability of copper(I) and (II) chloride complexes results in that the chemical individuality of alkali metal cations is differently reflected in the shape of the solubility isotherms: The stronger complex formation in copper(I) systems results in leveling of this effect and the weaker complex formation with copper(II), in its differentiation.

Original languageEnglish
Pages (from-to)512-516
Number of pages5
JournalRussian Journal of General Chemistry
Issue number4
Publication statusPublished - 1 Apr 2006


Scopus subject areas

  • Chemistry(all)

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