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Journal of Solution Chemistry

, Volume 22, Issue 4, pp 321–330 | Cite as

Solvent effects on chemical processes. 3. Surface tension of binary aqueous organic solvents

  • Davar Khossravi
  • Kenneth A. Connors
Article

Abstract

The surface tension of binary solvents is modelled by analogy to solvation effects arising from solvent-solute interactions. Competitive exchange equilibria are postulated between solvent component I (water) and solvent component 2 (organic cosolvent) for solute, which in this case is air; the solvation shell is thus the surface phase. A quantitative relationship is given between surface tension and mole fractions x1 and x2, the model parameters being exchange equilibrium constants K1 and K2. The equation is analyzed, it is applied to literature surface tension data, and it is compared with an earlier model from this laboratory. Curve-fits are very good, and the parameters appear to possess physical significance.

Key words

Surface tension solvation solvent effects 

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References

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Copyright information

© Plenum Publishing Corporation 1993

Authors and Affiliations

  • Davar Khossravi
    • 1
  • Kenneth A. Connors
    • 1
  1. 1.School of PharmacyUniversity of WisconsinMadison

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