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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 7, Number 4
August 20, 1963 

Study on Metal Cupferrate Complex (Part Ⅲ) Study on Distribution Ratio of Hydrogen Cupferrate in H2O-CHCl3 System

Metal Cupferrate Complex 에 관한 연구 (제3보) H2O-Chloroform 계에서의 Hydrogen Cupferrate 의 분배계수에 관한 연구
Si-Joong Kim, Doo-Soon Shin

김시중, 신두순
H2O-chloroform계에서의 hydrogen cupferrate의 분배계수와 수용액상의 pH, 이온강도 및 cupferron의 농도와의 관계를 살폈는데, 분배계수는 pH(1.50∼3.00사이)와 이온강도(0.1∼2.0사이)에는 무관하지만 cupferron의 농도가 커질수록 분배계수는 증가했으며, 열력학적인 분백계수의 완전한 값으로 120.0리란 새로운 값을 얻었다. 한편 cupferron의 농도가 커짐에 따라 분백계수가 증가하는 까닭은 chloroform상에 monomer로서의 HCup. 의 활동도의 감소로 간주하고, chloroform상에서의 HCup.의 농도와 chloroform상에서의 HCup.의 활동도계수와의 관계를 표시하는 실험식 -logfCHCl3=0.1285CCHCl3+7.775 2CHCl3를 얻었으며, 이 식은 HCup. 의 chloroform 용액 0.1mole/ιorder 이하의 농도에서 대단히 잘 맞는다.

The distribution ratio of hydrogen cupferrate in H2O-CHCl3 system was considered as a function of pH (HClO4), ionic strength (NaClO4), and cupferron concentration in perchloric acid media, respectively. The values were independent upon pH (1.50∼3.00 range) and ionic strength (0.1∼2.00 range), but they increasing the cupferron concentration in the acidic media. At the infinite dilution, the thermodynamic distribution ratio between chloroform and aqueous phase was 120. 0. The activity coefficients of hydrogen cupferrate in chloroform solution were determined by the distribution ratio. This activity coefficient may be calculated by using the empirical equation, -log fCHCl3 = 0.1285 CCHCl3 + 7.775 C2CHCl3 which represents the experimental data quite well for the solution in 0.1 mole/l order of hydrogen cupferrate concentration.

283 - 287
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