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Journal of Solution Chemistry

, Volume 6, Issue 3, pp 191–201 | Cite as

Thermodynamics of mixed electrolyte solutions. IX. Calculation of the osmotic and activity coefficients in a pseudoternary system (NaCl−nKCl)−MgCl2-H2O at 298.15°K

  • D. Saad
  • J. Padova
Article

Abstract

The equation of Reilly, Wood, and Robinson was used to predict the osmotic coefficient of a pseudoternary system (NaCl−nKCl)−MgCl2−H2O over a molal ionic strength range of 1.0 to 5.0 moles-kg−1. The results are in close agreement with experimental data at most ionic strengths. The standard deviation in the osmotic coefficients over the entire concentration range lies within 0.0035. The predicted values of the mean activity coefficients are in good agreement with those obtained by the treatments of both Scatchard and Friedman. Mean activity coefficients for the other components were also predicted.

Key words

Activity coefficients osmotic coefficients interaction parameters excess Gibbs free energy of mixing NaCl KCl MgCl2 

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References

  1. 1.
    G. Scatchard,J. Am. Chem. Soc. 90, 3224 (1969).Google Scholar
  2. 2.
    P. J. Reilly and R. H. Wood,J. Phys. Chem. 73, 4992 (1969).Google Scholar
  3. 3.
    P. J. Reilly, R. H. Wood, and R. A. Robinson,J. Phys. Chem. 75, 1305 (1971).Google Scholar
  4. 4.
    R. A. Robinson and R. H. Wood,J. Solution Chem. 1, 481 (1972).Google Scholar
  5. 5.
    K. S. Pitzer and J. Kim,J. Am. Chem. Soc. 96, 570 (1974).Google Scholar
  6. 6.
    K. S. Pitzer,J. Solution Chem. 4, 250 (1975).Google Scholar
  7. 7.
    D. Saad, J. Padova, and Y. Marcus,J. Solution Chem. 4, 983 (1975).Google Scholar
  8. 8.
    J. Padova and D. Saad,J. Solution Chem. 6, 57 (1977).Google Scholar
  9. 9.
    G. Scatchard,J. Am. Chem. Soc. 83, 2636 (1961).Google Scholar
  10. 10.
    R. M. Rush and J. Johnson,J. Phys. Chem. 72, 767 (1968).Google Scholar
  11. 11.
    R. M. Rush, Oak Ridge Nat. Lab. Rept. ORNL-4402, 1969.Google Scholar
  12. 12.
    H. L. Friedman,Ionic Solution Theory (New York, 1962).Google Scholar
  13. 13.
    R. A. Robinson and R. H. Stokes,Electrolyte Solutions, rev. ed. (Butterworths, London, 1970).Google Scholar
  14. 14.
    R. A. Robinson,J. Phys. Chem. 65, 662 (1961); R. M. Rush and R. A. Robinson,J. Tenn. Acad. Sci. 43, 22 (1968); R. A. Robinson, A. K. Covington, and C. P. Bezboruah,J. Chem. Thermodyn. 2, 431 (1970).Google Scholar
  15. 15.
    Y. C. Wu, R. M. Rush, and G. Scatchard,J. Phys. Chem. 72, 4048 (1968).Google Scholar
  16. 16.
    R. A. Robinson and R. H. Stokes,Trans. Faraday Soc. 41, 752 (1945).Google Scholar
  17. 17.
    M. H. Lietzke and R. W. Stoughton,J. Phys. Chem. 66, 508 (1962).Google Scholar
  18. 18.
    R. H. Wood, J. D. Patton, and M. Ghamkar,J. Phys. Chem. 73, 346 (1969).Google Scholar
  19. 19.
    M. H. Lietzke and R. W. Stoughton,J. Inorg. Nucl. Chem. 37, 2503 (1975).Google Scholar
  20. 20.
    H. L. Friedman and C. V. Krishnan,J. Phys. Chem. 74, 1927 (1970).Google Scholar

Copyright information

© Plenum Publishing Corporation 1977

Authors and Affiliations

  • D. Saad
    • 1
  • J. Padova
    • 1
  1. 1.Soreq Neuclear Research CentreYavneIsrael

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