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Determination of the NaFaq association constant for the NaF–NaCl–H2O System at 25–75°C by means of potentiometry

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Abstract

Potentiometric measurements are made for the NaF–NaCl–H2O system at 25, 50, and 75°C using Na+- and F–-sensitive electrodes and a Ag/AgCl reference electrode in both liquid junction and liquid junction free cells. A correction for the liquid junction potential is introduced to the liquid junction cells. The activity coefficients are calculated using the Debya–Hückel equation in the third approximation. The NaF thermodynamic association constants are determined (logK° =–0.375,–0.29, and–0.25) with an error of ±0.1 log units at 25, 50, and 75°C, respectively.

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References

  1. C. F. Baes, and R. E. Mesmer, The Hydrolysis of Cations (Krieger, Malabar, FL, 1986).

    Google Scholar 

  2. S. A. Wood, in Rare-Element Geochemistry and Mineral Deposits, GAC Short Course Notes 17 (Geol. Assoc. Canada, 2005), p. 217.

    Google Scholar 

  3. G. P. Zaraisky, V. Korzhinskaya, and N. Kotova, Mineral. Petrol. 99, 287 (2010).

    Article  CAS  Google Scholar 

  4. C. K. Richardson and H. D. Holland, Geochim. Cosmochim. Acta 43, 1313 (1979).

    Article  CAS  Google Scholar 

  5. J. W. Johnson, E. H. Oelkers, and H. C. Helgeson, Comp. Geosci. 18, 899 (1992).

    Article  Google Scholar 

  6. E. U. Franck, Angew. Chem. 81, 309 (1961).

    Article  Google Scholar 

  7. J. N. Butler and R. Huston, Anal. Chem 42, 1308 (1970).

    Article  CAS  Google Scholar 

  8. R. A. Robinson, W. C. Duer, and R. G. Bates, Anal. Chem. 43, 1862 (1971).

    Article  CAS  Google Scholar 

  9. G. R. Miller and D. R. Kester, Mar. Chem. 4, 67 (1976).

    Article  CAS  Google Scholar 

  10. C. B. Chan, N. H. Tioh, and G. T. Hefter, Polyhedron 3, 845 (1984).

    Article  CAS  Google Scholar 

  11. A. V. Usha and G. Atkinson, J. Solution Chem. 21, 477 (1992).

    Article  CAS  Google Scholar 

  12. S. Manohar and G. Atkinson, J. Solution Chem. 22, 859 (1993).

    Article  CAS  Google Scholar 

  13. R. Bates, Determination of pH: Theory and Practice (Wiley & Sons, New York, 1964), p. 48.

    Google Scholar 

  14. The Chemist’s Reference Book, Ed. by B. P. Nikol’skii (Khimiya, Moscow, Leningrad, 1964), Vol. 3 [in Russian].

  15. D. Dobos, Electrochemical Data (Elsevier, Amsterdam, 1975).

    Google Scholar 

  16. Yu. V. Shvarov, Geochem. Int. 46, 834 (2008).

    Article  Google Scholar 

  17. H. C. Helgeson, D. H. Kirkham, and G. C. Flowers, Am. J. Sci. 291, 1249 (1981).

    Article  Google Scholar 

  18. P. C. Ho, D. A. Palmer, and R. E. Mesmer, J. Solution Chem. 23, 997 (1994).

    Article  CAS  Google Scholar 

  19. D. A. Sverjensky, E. L. Shock, and H. C. Helgeson, Geochim. Cosmochim. Acta 61, 1359 (1997).

    Article  CAS  Google Scholar 

  20. E. L. Shock, D. C. Sassani, M. Willis, and D. A. Sverjensky, Geochim. Cosmochim. Acta 61, 907 (1997).

    Article  CAS  Google Scholar 

  21. Yu. V. Shvarov, Appl. Geochem. 55, 17 (2015).

    Article  CAS  Google Scholar 

  22. Thermal Constants of Individual Substances, Ed. by V. P. Glushko (Moscow, 1981), No. 10, Pt. 1, p. 120 [in Russian].

  23. V. Majer, M. Obšil, G. Hefter, and J.-P. E. Grolier, J. Solution Chem. 26, 847 (1997).

    Article  CAS  Google Scholar 

  24. P. C. Ho and D. A. Palmer, J. Solution Chem. 25, 711 (1996).

    Article  CAS  Google Scholar 

Download references

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Authors and Affiliations

  1. Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry, Russian Academy of Sciences, Moscow, 119017, Russia

    E. V. Lukyanova & A. V. Zotov

Authors
  1. E. V. Lukyanova
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  2. A. V. Zotov
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Correspondence to A. V. Zotov.

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Original Russian Text © E.V. Lukyanova, A.V. Zotov, 2017, published in Zhurnal Fizicheskoi Khimii, 2017, Vol. 91, No. 4, pp. 648–653.

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Lukyanova, E.V., Zotov, A.V. Determination of the NaFaq association constant for the NaF–NaCl–H2O System at 25–75°C by means of potentiometry. Russ. J. Phys. Chem. 91, 672–677 (2017). https://doi.org/10.1134/S0036024417040148

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  • DOI: https://doi.org/10.1134/S0036024417040148

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