Microchimica Acta

, Volume 87, Issue 5–6, pp 297–306 | Cite as

A microcomputer-controlled microcalorimeter calibration circuit

3. Enthalpies of solution of linear and cyclic alkanes in glacial acetic acid
  • Donald W. Rogers
  • Jae -Ha Kim
  • Shantilal C. Patel
  • Richard A. Wurm
Article
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Summary

A Microcomputer-Controlled Microcalorimeter Calibration Circuit

3. Enthalpies of Solution of Linear and Cyclic Alkanes in Glacial Acetic Acid

The molar enthalpy of solution ofn-alkanes and cycloalkanes has been studied in an isoperibol calorimeter at 25.0 °C. Reasoning from a purely volumetric effect of intrusion of solute molecules into an associated solvent, we might expect compact cycloalkane molecules to disturb the solvent structure less than linear alkanes and to have a smaller exothermic enthalpy of solution than then-alkanes. That is not the case, evidently, as the cyclic compounds mix with aΔHs that is exothermic in the same degree as their linear counterparts. These results are discussed in terms of a model in which each alkane molecule occupies a cavity in the structured solvent that is large with respect to itself. Enthalpy of solution of saturated alkanes in glacial acetic acid does not depend on the geometry of the alkane for the two homologous series studied thus far.

Keywords

Enthalpy Acetic Acid Inorganic Chemistry Alkane Calorimeter 
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References

  1. 1a.
    R. B. Williams, J. Amer. Chem. Soc.64, 1395 (1942);Google Scholar
  2. 1b.
    T. Flitcroft, H. A. Skinner, and M. C. Whiting, Trans. Far. Soc.53, 784 (1957);Google Scholar
  3. 1c.
    H. A. Skinner and A. Snelson,ibid 55, 404 (1959);Google Scholar
  4. 1d.
    E. Bretschneider and D. W. Rogers, Mikrochim. Acta [Wien]1970, 482;Google Scholar
  5. 1e.
    R. Fuchs and L. A. Peacock, J. Phys. Chem.83, 1975 (1979);Google Scholar
  6. 1f.
    D. W. Rogers, L. S. Choi and J. A. Beauregaard, Mikrochim. Acta [Wien]1980 I, 245.Google Scholar
  7. 2a.
    J. D. Cox and G. Pilcher, The Thermochemistry of Organic and Organometallic Compounds, New York: Academic Press 1970.Google Scholar
  8. 2b.
    R. B. Turner, W. R. Meador, and R. E. Winkler, J. Amer. Chem. Soc.79, 4116 (1957) and subsequent papers to R. B. Turner, A. D. Jarrett, P. Goebel, and B. J. Mallon, J. Amer. Chem. Soc.95, 790 (1973).Google Scholar
  9. 3.
    D. W. Rogers, B. Munoz-Hresko, and R. R. Mandra, Mikrochim. Acta [Wien]1984 II, 417.Google Scholar
  10. 4a.
    R. M. Izatt, L. D. Hansen, D. J. Eatough, T. E. Jensen, and J. J. Christiansen, in: R. S. Porter and J. F. Johnson, eds., Analyt. Calorimetry, Vol. 3, New York: Plenum Press, 1974, p. 237 ff.Google Scholar
  11. 4b.
    P. W. Carr, W. D. Bostic, L. M. Canning, and R. H. Callicott, Amer. Lab.8, 45 (1976);Google Scholar
  12. 4c.
    A. J. Head, Combustion and Reaction Calorimetry in Chemical Thermodynamics Specialist Periodical Reports, London: The Chemical Society, 1973, p. 96.Google Scholar
  13. 5.
    D. W. Rogers and S. C. Patel, Mikrochim. Acta [Wien]1982 II, 383.Google Scholar
  14. 6.
    M. J. Kamlet, R. Doherty, R. W. Taft, and M. H. Abraham, J. Amer. Chem. Soc.105, 6741 (1983).Google Scholar
  15. 7a.
    J. H. Hildebrand, J. M. Prausnitz, and R. L. Scott, Regular and Related Solutions, Van Nostrand Reinhold, N. Y., 1970;Google Scholar
  16. 7b.
    G. Skatchard, Chem. Rev.8, 321 (1931);Google Scholar
  17. 7c.
    A. F. M. Barton, Chem. Rev.75, 731 (1975).Google Scholar

Copyright information

© Springer-Verlag 1986

Authors and Affiliations

  • Donald W. Rogers
    • 1
  • Jae -Ha Kim
    • 1
  • Shantilal C. Patel
    • 1
  • Richard A. Wurm
    • 1
  1. 1.Chemistry Department, Brooklyn CampusLong Island UniversityBrooklynUSA

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