Current time in Korea 04:11 Aug 20 (Tue) Year 2019 KCS KCS Publications
KCS Publications
My Journal Log In Register
HOME > Search > Browsing(BKCS) > Archives

Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 6, Number 5
BKCSDE 6(5)
May 20, 1985 

 
Title
The Pressure Effect on the Ionization of m-Chloroanilinium Ion in Sodiumacetate Buffer Solution
Author
Jong-Gi Jee, Young-Hwa Lee, Young-Jik Kwak
Keywords
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∼50℃, 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.
Page
266 - 269
Full Text
PDF