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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 37, Number 3
JKCSEZ 37(3)
June 20, 1993 

 
Title
Effects of Pressure on r-Function of KCl in Water-Methanol Systems

물-에탄올 혼합용매에서 KCl의 r-함수에 대한 압력의 효과
Author
Jong Jae Chung, Hag Sung Kim, Oh Ryong Kwon, Seong Keuck Cha

정종재, 김학성, 권오룡, 차성극
Keywords
Abstract
물-메탄올 혼합용매에서 KCl의 용매화에 미치는 압력의 효과를 알기 위하여 여러 가지 압력하에서 물-메탄올 혼합 용매의 밀도와 점성도 및 이 혼합용매하에서 KCl의 무한희석시 당량 전도도를 측정하여 r-함수를 구하였다. 25℃, 1기압에서 KCl의 r-함수는 물에서는 0.613이나 메탄올의 양이 증가함에 따라 감소하다가 다시 증가하였으며 고압하에서도 대기압에서와 비슷한 변화의 경향을 보였다. 일정 압력하에서는 메탄올의 양이 증가함에 따라 r-함수가 감소하다가 다시 증가하였으나, 일정 용매조성에서 압력이 증가하면 r-함수는 감소하였다.

The effect of pressure on solvation of potassium chloride was studied by the density and viscosity measurements of water-methanol systems and the conductance measurements of KCl in this systems. These were used to calculate the r-function of KCl. It was found that the r-function of KCl which is 0.613 at 25℃ and 1 bar in water was continuously decreased to the minimum point and enhanced with increasing the composition of methanol. At high pressure, the r-function of KCl was similar to that of normal pressure. But r-function decreased with increasing pressure at the specific component of methanol.

Page
279 - 286
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