Bulletin of the Korean Chemical Society

  • 제5권3호
  • /
  • Pages.112-117
  • /
  • 1984
  • /
  • 0253-2964(pISSN)
  • /
  • 1229-5949(eISSN)
대한화학회 (Korean Chemical Society)
권호 표지
DOI QR코드

DOI QR Code

The Pressure Effect on the Ionic Association of the 3,5,N-trimethyl Pyridinium Iodide in Ethanol-Water Mixture

  • Jong-Gi Jee (Department of Chemistry, Teacher's College, KyungPook National University) ;
  • Young Hwa Lee (Department of Chemistry, Teacher's College, KyungPook National University) ;
  • Kyung-Hee Lee (Department of Chemistry, Teacher's College, KyungPook National University) ;
  • Oh Cheun Kwun (Department of Chemistry, Hanyang University)
  • 발행 : 1984.06.20
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

The association constants (K) of 3,5,N-trimethyl pyridinium iodide in 95 volume percent ethanol-water mixed solvent were determined by a modified UV and conductance method at $25^{\circ},\;30{\circ},\;40{\circ}\;and\;50{\circ}C$ over the pressure range 1 to 2000 bars. The association process is enhanced with increasing pressure and decreasing temperature. From K values, we obtained the total partial molar volume change (${\Delta}V$) and some thermodynamic parameters. The electrostriction volume (${\Delta}V_{el}$) and intrinsic volume (${\Delta}V_{in}$) were also evaluated. The values of ${\Delta}V,\;{\Delta}V_{el},\;{\Delta}V_{in}$ are negative, negative and positive, respectively, and the absolute values of all these three decrease with increasing pressure and temperature. The ion-pair size (a) were varied 3 to 6 ${\AA}$, with pressure and temperature. The solvation number (n) decreased from 2 to 0.5 with increasing temperature.

키워드

참고문헌

  1. J. Amer. Chem. Soc. v.77 E. M. Kosower
  2. J. Korean Chem. Soc. v.24 J. U. Hwang;S. D. Yoh;J. G. Jee
  3. Proc. Amer. Acad. Arts. Sci. v.61 P.W.Bridgman
  4. Physico-Chemical Effects of Pressure S. D. Hamann
  5. Aust. J. Chem. v.28 S. D. Hamann
  6. Amer. J. of Sci. v.256 G. C. Kennedy;W. L. Knight;W. H. Holser
  7. Ph. D. thesis, University of Han Yang J. G. Jee
  8. Jour. Frankline Inst. v.225 T. Shedlovsky
  9. Bull. Korean Chem. Soc. v.4 J. G. Jee;Y. H. Lee;E. H. Woo;K. H. Lee
  10. J. Phys. Chem. v.86 J. Everaert;A. Persoons
  11. Advances in High Pressure Research v.2 R. A. Horne;R.S. Bradley(Ed.)
  12. Chem. Rev. v.78 T.Asano;W. J. leNoble
  13. J. Phys. Chem. v.82 P. Hemmes;J. N. Costanzo;F. Jordan
  14. J. Amer. Chem. Soc. v.78 E. M. Kosower;J. C. Burbach
  15. J. Amer. Chem. Soc. v.88 R. M. Fuoss
  16. J. Phys. Chem. v.68 S. D. Hamann;P. J. Pearce;W. J. Strauss
  17. Phys. v.1 M. Born Zeit
  18. J. Phys. Chem. v.65 B. B. Owen;R. C. Miller;C. E. Milner
  19. Phys. Rev. v.38 N. E. Danforth