Advertisement

Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

Ion association of lithium and sodium picrate in 2-propanol at 25°C. II. Spectrophotometric measurements

Abstract

The molar absorptivities of lithium picrate and of sodium picrate have been measured as a function of salt concentration (in the 0.1–1 mmol-dm−3 concentration range) in 2-propanol at 25°C. Values of the molar absorptivities of the free picrate ion ∈i, of the ion pair ∈p, and of the ion pair association constant Ka have been calculated for each salt. The Ka values for these two salts in this solvent calculated from spectrophotometric measurements were found to be the same within experimental uncertainty as the values of Ka calculated from conductance measurements.

This is a preview of subscription content, log in to check access.

References

  1. 1.

    A. K. Covington, J. G. Freeman, and T. H. Lilley,J. Phys. Chem. 74, 3773 (1970).

  2. 2.

    W. J. DeWitte, L. Liu, E. Mei, J. L. Dye, and A. I. Popov,J. Solution Chem. 6, 337 (1977).

  3. 3.

    W. R. Gilkerson and K. L. Kendrick,J. Phys. Chem. 88, 5352 (1984).

  4. 4.

    F.-c. Huang and W. R. Gilkerson,J. Solution Chem. 12, 161 (1983).

  5. 5.

    M. D. Jackson and W. R. Gilkerson,J. Am. Chem. Soc. 101, 328 (1979).

  6. 6.(a)

    W. H. Lee and R. J. Wheaton,J. Chem. Soc., Faraday II 74, 743 (1978)

  7. 6.(b)

    ,74, 1456 (1978)

  8. 6.(c)

    75, 1128 (1979).

  9. 7.(a)

    R. M. Fuoss,J. Phys. Chem. 82, 2427 (1978)

  10. 7.(b)

    R. M. Fuoss,J. Solution Chem. 9, 579 (1980).

  11. 8.

    E. Pitts and B. E. Tabor,Trans.Faraday Soc. 66, 693 (1970).

  12. 9.(a)

    J. Barthel, J.-C. Justice, and R. Wachter,Z. Phys. Chem. (Weisbaden) 84, 100 (1973)

  13. 9.(b)

    D. Treiner and J.-C. Justice,J. Chim. Phys. Phys.-Chim. Biol. 68, 56 (1971).

  14. 10.

    A. D. Pethybridge,Z. Phys. Chem. (Wiesbaden) 133, 143 (1982).

  15. 11.

    A. D. Pethybridge and S. S. Taba,J. Chem. Soc., Faraday I 76, 368 (1980).

Download references

Author information

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Kendrick, K.L., Gilkerson, W.R. Ion association of lithium and sodium picrate in 2-propanol at 25°C. II. Spectrophotometric measurements. J Solution Chem 15, 253–258 (1986). https://doi.org/10.1007/BF00646693

Download citation

Key words

  • Spectrophotometry
  • ion association
  • ion pair formation constant
  • lithium picrate
  • sodium picrate
  • 2-propanol