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Equilibrium in Saturated Ca(OH)2 Solutions: Parameters and Dissociation Constants

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Abstract

A new computer program has been developed for the calculation of pH, pOH, hydroxide ion concentration m OH, species distribution coefficients αi, ionic activity coefficients γi ionic strength I, buffer capacity β, solubility product K s0, and the two dissociation constants, K b1 and K b2, corresponding, respectively, to first and second dissociation steps of Ca(OH)2 in aqueous solution. Previously developed methodology, for the calculation of pH, αi, γi I, and β parameters of pH buffer solutions, starting from the corresponding acidity constants, has been adapted for the case of aqueous Ca(OH)2 solutions, for which the pertinent stoichiometric relationships are different from those applicable to mixtures of acids and their salts. The results show that, contrary to what is currently assumed, the first dissociation is far from complete. Values are given for the concentrations and activities of species Ca(OH)2(aq), Ca(OH)+(aq), and Ca2+ (aq) in saturated calcium hydroxide solutions at 25°C.

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REFERENCES

  1. M. J. G. Lito, M. F. Camões, M. I. Ferra, and A. K. Covington, Anal. Chim. Acta 239 (1990).

  2. A. K. Covington, R. G. Bates, and R. A. Durst, Pure Appl. Chem. 57, 531 (1985).

    Google Scholar 

  3. L. Meites, Handbook of Analytical Chemistry, (McGraw-Hill New York, 1963).

  4. A. M. Huntz, Équilibres Acido-Basiques, pH (Masson, Paris, 1975).

    Google Scholar 

  5. R. G. Bates, V. E. Bower, R. G. Canham, and J. E. Prue, Trans. Faraday Soc. 55, 2062 (1959).

    Google Scholar 

  6. R. G. Bates, Determination of pH-Theory and Practice, 2nd edn. (Wiley, New York, 1973).

    Google Scholar 

  7. W. L. Marshall and E. U. Franck, J. Phys. Chem. Ref. Data 10, 295 (1981).

    Google Scholar 

  8. G. Kilde, Z. Anorg. Chem. 218, 113 (1934).

    Google Scholar 

  9. D. R. Lide, CRC Handbook of Chemistry and Physics, 78th edn. (CRC Press, Boca Raton, 1998).

    Google Scholar 

  10. R. G. Bates, J. Res. Nat. Bur. Stand. 66A, 181 (1962).

    Google Scholar 

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Authors and Affiliations

  1. Faculdade de Farmácia da Universidade de Lisboa, Portugal

    M. J. Guiomar H. M. Lito

  2. Faculdade de Ciências da Universidade de Lisboa, Portugal

    M. Filomena G. F. C. Camões

  3. Centro de Electroquímica e Cinética da Universidade de Lisboa Rua da Escola Politécnica, 58, 1294, Lisboa Codex-, Portugal

    M. J. Guiomar H. M. Lito & M. Filomena G. F. C. Camões

  4. Department of Chemistry, University of Newcastle, Newcastle-upon-Tyne, NE1 7RU, Great Britain

    Arthur K. Covington

Authors
  1. M. J. Guiomar H. M. Lito
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  2. M. Filomena G. F. C. Camões
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  3. Arthur K. Covington
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Lito, M.J.G.H.M., Camões, M.F.G.F.C. & Covington, A.K. Equilibrium in Saturated Ca(OH)2 Solutions: Parameters and Dissociation Constants. Journal of Solution Chemistry 27, 925–933 (1998). https://doi.org/10.1023/A:1022663212760

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  • DOI: https://doi.org/10.1023/A:1022663212760

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