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Thermodynamics of very concentrated aqueous electrolytes: LiCl, ZnCl2, and ZnCl2-NaCl at 25°C

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Abstract

The effectiveness of extended ion-interaction equations in the treatment of activity and osmotic coefficients for very concentrated electrolytes is explored for the examples LiCl-H2O, ZnCl2-H2O, and NaCl-ZnCl2-H2O. For the two pure electrolytes the results are very satisfactory. Although satisfactory agreement was also obtained for the solubility of NaCl in the ternary system, this is too limited a data base to justify general conclusions.

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Correspondence to Kenneth S. Pitzer.

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Anstiss, R.G., Pitzer, K.S. Thermodynamics of very concentrated aqueous electrolytes: LiCl, ZnCl2, and ZnCl2-NaCl at 25°C. J Solution Chem 20, 849–858 (1991). https://doi.org/10.1007/BF01074948

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Key words

  • Thermodynamics
  • electrolyte solutions
  • osmotic coefficients
  • activity coefficients