物理化学学报 >> 1999, Vol. 15 >> Issue (10): 956-960.doi: 10.3866/PKU.WHXB19991018

研究简报 上一篇    

等压法测定298.15K下LiCl-CaCl2-H2O体系的活度系数

龙光明, 姚燕, 王凤琴, 王瑞陵   

  1. 中国科学院盐湖研究所西安二部，西安 710043
  • 收稿日期:1998-12-03 修回日期:1999-03-30 发布日期:1999-10-15
  • 通讯作者: 龙光明

Isopiestic Determination of Activity Coefficients of LiCl and CaCl2 in LiCl-CaCl2-H2O System at 298.15K

Long Guang-Ming, Yao Yan, Wang Feng-Qin, Wang Rui-Ling   

  1. Institute of Salt Lakes,Chinese Academy of Science,Xi'an 710043
  • Received:1998-12-03 Revised:1999-03-30 Published:1999-10-15
  • Contact: Long Guang-Ming

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关键词: LiCl, CaCl2, 渗透系数, 活度系数, 等压测定, Pitzer参数

Abstract:

The isopiestic method was used to determinate isopiestic molality and osmotic coefficients in single salt solutions of LiCl-H2(molality range from 0.5 to 9.0 mol•kg -1 ), CaCl2-H2O(molality range from 0.35 to 5.2 mol•kg -1 ) and multisalt solution LiCl-CaCl2-H2O(ionic strength range from 0.5 to 15.7 mol•kg -1 ) at 298.15K, from which Pitzer's interaction parameters of single salt ,mixed salts of the systems were obtained. The mean ionic activity coefficients of LiCl、CaCl 2 in pure and mixed solutions were reported.

Key words: LiCl, CaCl2, Activity coefficients, Isopiestic method, Pitzers parameters