Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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The Pressure Effect on the Ionization of m-Chloroanilinium Ion in Sodiumacetate Buffer Solution

  • Jee ,Jong-Gi (Department of Chemistry, Teacher's College, Kyungpook National University) ;
  • Lee, Young-Hwa (Department of Chemistry, Teacher's College, Kyungpook National University) ;
  • Kwak, Young-Jik (Department of Chemistry, Teacher's College, Kyungpook National University)
  • Published : 1985.10.20
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Abstract

The dissociation constants(K) of m-chloroanilinium ion in water-ethanol mixture, where the volume percentage of water is 89.5%, were evaluated by UV-spectroscopic method at $20{\sim}50^{\circ}C$, up to 1500 bars with changing ionic strength from 0.04 to 0.10 mol $kg^{-1}$ by use of acetate buffer. K values enhance with increasing ionic strength and temperature, but decrease with elevating pressure. From K values, we obtained the partial molar volume change and some other thermodynamic parameters. From the values of enthalpy, entropy and isoequilibrium temperature (649 K), we concluded that the dissociation of m-chloroanilinium ion mentioned above is controlled by enthalpy.

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References

  1. J. Chem. Soc. Faraday v.1 no.71 S.D. Hamann;M. Linton
  2. Ph. D. Thesis, Univ. of Han Yang J.G. Jee
  3. Bull. Korean Chem. Soc. v.4 J.G. Jee;Y.H. Lee;E.H. Woo;K.H. Lee
  4. Bull. Korean Chem. Soc. v.5 J.G. Jee;Y.H. Lee;K.H. Lee;O.C. Kwun
  5. Phys. Rev. v.38 N.E. Danforth
  6. J. Phys. Chem. v.65 B.B. Owen;R. C. Miller;C.E. Milner
  7. J. Phys. Chem. v.78 S. Cabani;G. Conti;L. Lepri
  8. Modern Aspects of Physical Chemistry at High Pressure B.S. El'yanov;E.M. Vasylvitskaya;J. Osugi(ed.)
  9. J. Korean Chem. Soc. v.24 J.U. Hwang;S.D. Yoh;J.G. Jee
  10. Z. Phys. Chem. v.112 H. Von Halban;L. Ebert
  11. The Structure of Electrolyte Solutions R.A. Robinson;W.J. Hamer(ed.)
  12. J. Chem. Soc. Faraday, 1 v.70 S.D. Hamann;M. Linton
  13. J. Am. Chem. Soc. v.77 J.T. Denison;J.B. Ramsey
  14. Z. Phys. Chem. (Frankfurt am Main) v.1 M. Eigen
  15. J. Am. Chem. Soc. v.88 R.M. Fuoss
  16. J. Phys. Chem. v.68 S.D. Hamann;P.J. Pearce;W.J. Strauss
  17. Aust. J. Chem. v.28 S.D. Hamann