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Universal thermodynamic model of calculating the mass action concentrations of omponents in a ternary strong electrolyte aqueous solution and its application in the NaCl-KCl-H_2O system

查看全文 作　　者：Weijie [1,3]Zhao;Hanjie [1]Guo;Xuemin [2]Yang;Zhigang [1]Dan 高影响力作者 机构地区：[1]School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;[2]State Key Lab of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;[3]Beijing Research & Design Institute for Metallurgical Equipment, China Metallurgical Group Corporation, Beijing 100029, China高影响力机构 出　　处：《Journal of University of Science and Technology Beijing》索引2008年第15卷第5期,共9页高影响力期刊 摘　　要：A universal thermodynamic model of calculating the mass action concentrations of components in a ternary strong elec-trolyte aqueous solution has been developed based on the ion and molecule coexistence theory,and verified in the NaCl-KCl-H2O ternary system at 298.15 K. To compare the difference of the thermodynamic model in binary and ternary strong electrolyte aqueous solutions,the mass action concentrations of components in the NaCl-H2O binary strong electrolyte aqueous solution were also com-puted at 298.15K. A transformation coefficient was required to compare the calculated mass action concentration and reported activ-ity because they were obtained at different standard states and concentration units. The results show that the transformation coeffi-cients between calculated mass action concentrations and reported activities of the same components change in a very narrow range. The calculated mass action concentrations of components in the NaCl-H2O and NaCl-KCl-H2O systems are in good agreement with the reported activities. This indicates that the developed thermodynamic model can reflect the structural characteristics of solutions,and the mass action concentration also strictly follows the mass action law. 关 键 词：三元系统 二元系统 热力学 计算方法 浓度计算
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