|
KMID : 1059519890330040343
|
|
Journal of the Korean Chemical Society
1989 Volume.33 No. 4 p.343 ~ p.349
|
|
|
The Effects of Substituent, Pressure and Temperature on the Dissociation Constants of Organic Acids (Ⅶ). Dissociation Constants of Some ω-Amino Acid in Aqueous Solution
|
|
Hwang Jung-Ui
Kwak Young-Woo
Jung Jae-Won
|
|
|
Abstract
|
|
|
|
The dissociation constants of β-alanine and γ-aminobutyric acid were measured in the temperature range from 20 to 40℃ and pressure up to 2,500 bar by conductometric method. The both dissociation constants of respective amino acid increase with temperature increase but pressure effect is not same as the temperature. The K1 increases as pressure increases but K2 decreases. The properties of these amino acids were discussed in terms of the thermodynamic properties of the dissociation reaction. A relationship between the dissociation constants and the distance between substituted groups of amino acid was discussed. The substituted effects of the reaction were deduced from Hammett reaction and substituted constants which were calculated from the measured dissociation constants.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|