Measurement of Solubilities in the Ternary System

Journal of the Korean Chemical Society

Guang yue Hou¹  Ji min Yang¹  Peng Kou¹  Tian rong Ding¹ 

关键词: Solubility equilibrium constant;    Solubility prediction;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

The solubility and the physicochemical property (refractive index) in the NaCl-CaCl2-H2O and KCl-CaCl2-H2O systems were determined at 50 oC and the phase diagrams and the diagrams of physicochemical property vs composition were plotted. One invariant point, two univariant curves, and two crystallization zones, corresponding to sodium Chloride (or potassium chloride), dihydrate (CaCl2¡¤2H2O) showed up in the phase diagrams of the ternary systems. The mixing parameters ¥èM,Ca and ¥×M,Ca,Cl (M = Na or K) and equilibrium constant Ksp were evaluated in NaCl-CaCl2-H2O and KCl-CaCl2-H2O systems by least-squares optimization procedure, in which the single-salt Pitzer parameters of NaCl, KCl and CaCl2 ¥â(0), ¥â(1), ¥â(2) and C¬æ were directly calculated from the literature. The results obtained were in good agreement with the experimental data.

【 授权许可】

Unknown