Journal of the Korean Chemical Society (대한화학회지)

Korean Chemical Society (대한화학회)
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The Effect of Substituent, Pressure and Temperature on the Dissociation Constants of Organic Acids. (3) Dissociation Constants of Some Alkyl Pyridines in Aqueous Solution

유기산의 해리평형에 미치는 치환기 효과와 그의 온도 및 압력의 영향. (3) 수용액중에서 알킬화피리딘의 해리상수

  • Jung-Ui Hwang (The Research Institute for Physcis and Chemistry, kyungpook National University) ;
  • Jong-Eon Lee (The Research Institute for Physcis and Chemistry, kyungpook National University) ;
  • Jae-Won Jung (The Research Institute for Physcis and Chemistry, kyungpook National University) ;
  • Kyung-Hee Chang (The Research Institute for Physcis and Chemistry, kyungpook National University)
  • 황정의 (경북대학교 물리화학연구소) ;
  • 이종언 (경북대학교 물리화학연구소) ;
  • 정재원 (경북대학교 물리화학연구소) ;
  • 장경희 (경북대학교 물리화학연구소)
  • Published : 1986.04.20
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Abstract

The effects of substituents, pressure and temperature on the dissociation constants of alkylpyrines(2, 3 and 4-methyl and ethyl) were studied by measuring the dissociation constants of pyridines by conductance method at various temperatures and pressures in aqueous solution. The constants were increased as the temperature increase but decreased as pressure increase. From the constants various thermodynamic properties were calculated and discussed the dissociation reactions. It was estimated that alkylpyridines have exceptional dissociation reactions.

몇가지 알킬화피리딘(2, 3 and 4-methyl and ethylpyridine)의 해리상수의 온도 및 압력 의존성을 알아 보았으며 해리상수는 전도도법을 이용하여 측정했다. 이들 치환피리딘의 해리는 온도가 높아지면 증가하고 압력이 높으면 감소함을 알았다. 또 이들 해리상수 값에서 해리반응의 열역학적 성질을 계산하여 해리반응의 여러가지 성질을 알아 보았으며 알킬화피리딘의 특이성을 알 수 있었다.

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