Journal of Solution Chemistry

, Volume 12, Issue 3, pp 153–160 | Cite as

Calorimetric determination of the standard enthalpy of the first ionization of aqueous sulfur dioxide or ‘sulfurous acid’ at 25°C

  • Celina Dobrogowska
  • Loren G. Hepler
Article
Received:

Abstract

Previous investigations of the first ionization of aqueous sulfur dioxide or ‘sulfurous acid’ have led to ΔH 1 0 values ranging from −15 to −24.5 kJ-mol−1. To help with selection of a ‘best’ value for this enthalpy of ionization we have made calorimetric measurements of enthalpies associated with adding dilute perchloric acid to dilute aqueous sulfur dioxide and sodium bisulfite. Results have led to ΔH 1 0 =−17.40 kJ-mol−1, which we have combined with K1=0.0139 and the related ΔG 1 0 =10.60 kJ-mol−1 to obtain ΔS 1 0 =−93.9 J-K−1-mol−1 for the first ionization, all referring to 25°C.

Key Words

Sulfur dioxide sulfurous acid enthalpy of ionization entropy of ionization 
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References

  1. 1.
    G. C. Allred, J. W. Larson, and L. G. Hepler,Can. J. Chem. 59, 1068 (1981).Google Scholar
  2. 2.
    J. W. Larson, K. G. Zeeb, and L. G. Hepler,Can. J. Chem. 60, 2141 (1982).Google Scholar
  3. 3.
    S. R. Rao and L. G. Hepler,Hydrometallurgy 2, 293 (1976/1977).Google Scholar
  4. 4.
    I. V. Olofsson, J. J. Spitzer, and L. G. Hepler,Can. J. Chem. 56, 1871 (1978).Google Scholar
  5. 5.
    J. P. Guthrie,Can. J. Chem. 57, 454 (1979).Google Scholar
  6. 6.
    W. A. Roth and H. Zeumer,Z. Electrochem. 38, 164 (1932);38, 248 (1932).Google Scholar
  7. 7.
    H. F. Johnstone and P. W. Leppla,J. Am. Chem. Soc. 56, 2233 (1934).Google Scholar
  8. 8.
    I. E. Flis, G. P. Arkhipova, and K. P. Mischenko,J. Appl. Chem. USSR (Engl. trans.)38, 1466 (1965).Google Scholar
  9. 9.
    D. Deveze and P. Rumpf,Compt. rend. 258C, 6135 (1964).Google Scholar
  10. 10.
    H. Hikita, S. Asai, and H. Nose,AIChE Journal 24, 147 (1978).Google Scholar
  11. 11.
    J. W. Cobble, H. P. Stephens, I. R. McKinnon, and E. F. Westrum, Jr.,Inorg. Chem. 11, 1669 (1972).Google Scholar
  12. 12.
    A. G. Stiles and W. A. Felsing,J. Am. Chem. Soc. 48, 1543 (1926).Google Scholar
  13. 13.
    W. H. Johnson and S. Sunner,Acta Chem. Scand. 17, 1917 (1963).Google Scholar
  14. 14.
    E. M. Woolley, J. O. Hill, W. K. Hannan, and L. G. Hepler,J. Solution Chem. 7, 385 (1978).Google Scholar
  15. 15.
    D. D. Wagman, W. H. Evans, V. B. Parker, I. Halow, S. M. Bailey, and R. H. Schumm,Nat. Bur. Stand. Tech. Note 270-3, (U. S. Government Printing Office, Washington, DC, 1968).Google Scholar
  16. 16.
    Personal communications from R. N. Goldberg and D. Garvin, National Bureau of Standards.Google Scholar
  17. 17.
    L. Brewer, ‘Thermodynamic Values for Desulfurization Processes’, inFlue Gas Desulfurization, ACS Symposium Series No. 188, J. L. Hudson and G. T. Rochelle, eds., (American Chemical Society, Washington, DC, 1982).Google Scholar
  18. 18.
    W. B. Campbell and O. Maass,Can. J. Research 2, 42 (1930).Google Scholar
  19. 19.
    O. M. Morgan and O. Maass,Can. J. Research 5, 162 (1931).Google Scholar
  20. 20.
    W. B. Beazley, W. B. Campbell, and O. Maass,The Physical Properties of Sulphite Liquors, (Canada Department of Mines and Resources, Ottawa, Canada, 1938).Google Scholar
  21. 21.
    P. Picker, E. Tremblay, and C. Jolicoeur,J. Solution Chem. 3, 377 (1974).Google Scholar
  22. 22.
    H. V. Tartar and H. H. Garretson,J. Am. Chem. Soc. 63, 808 (1941).Google Scholar
  23. 23.
    A. Huss, Jr. and C. A. Eckert,J. Phys. Chem. 81, 2268 (1977).Google Scholar
  24. 24.
    V. B. Parker,Nat. Stand. Ref. Data Ser., Nat. Bur. Stand., 2, (U.S. Government Printing Office, Washington, DC, 1965).Google Scholar
  25. 25.
    L. G. Hepler and H. P. Hopkins, Jr.,Reviews in Inorg. Chem. 1, 303 (1979).Google Scholar
  26. 26.
    D. W. A. Bourne, T. Higuchi, and I. H. Pitman,J. Pharm. Sci. 63, 865 (1974).Google Scholar

Copyright information

© Plenum Publishing Corporation 1983

Authors and Affiliations

  • Celina Dobrogowska
    • 1
  • Loren G. Hepler
    • 1
  1. 1.Department of Chemistry and Oil Sands Research LaboratoryUniversity of LethbridgeLethbridgeCanada

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