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Monatshefte für Chemie / Chemical Monthly

, Volume 134, Issue 5, pp 769–775 | Cite as

Estimation of the Solubility Constant of Calcite, Aragonite, and Vaterite at 25°C Based on Primary Data Using the Pitzer Ion Interaction Approach

  • Alex De Visscher
  • Jan Vanderdeelen

Summary.

 Experimentally determined values of the solubility constant of anhydrous calcium carbonate species were compiled from primary literature. The data were processed using a least-squares technique and the activity coefficients were calculated using the Pitzer ion interaction model. It was shown that the literature data considered can be divided into two data sets which are internally consistent, but mutually inconsistent. The first data set was consistent with the existence of the CaHCO3+ ion pair, while the second data set was not. It was assumed that the difference between the two data sets might be due to surface charge effects.

Keywords. Solubility; Calcium carbonate; Thermodynamics; Salt effect; Ion interaction. 

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Copyright information

© Springer-Verlag/Wien 2002

Authors and Affiliations

  • Alex De Visscher
    • 1
  • Jan Vanderdeelen
    • 1
  1. 1.Department of Applied Analytical and Physical Chemistry, Faculty of Agricultural and Applied Biological Sciences, Ghent University, B-9000 Gent, BelgiumBE

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