高等学校化学学报

高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (3): 366.

• 论文 • 上一篇    下一篇

MX-NX2和MX-NX3电解质水溶液的热力学研究

申屠雁明, 李以圭   

  1. 清华大学化工系, 北京, 100084
  • 收稿日期:1991-03-09 出版日期:1992-03-24 发布日期:1992-03-24
  • 通讯作者: 申屠雁明
  • 基金资助:

    国家自然科学基金

Studies on Thermodynamics of MX-NX2 and MX-NX3 Aqueous Electrolyte Solutions

SHENTU Yan-ming, LI Yi-gui   

  1. Department of Chemical Engineering, Tsinghua University, Beijing, 100084
  • Received:1991-03-09 Online:1992-03-24 Published:1992-03-24

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摘要： 本文用Pitzer方程研究相同阴离子的非对称性混合电解质溶液的热力学性质,讨论了高次静电项(Eθij、Eθ′ij)所产生的效应。引入混合参数(θij)和离子强度(Ⅰ)的关系式,估算了25℃时MX-NX2和MX-NX3电解质水溶液的Pitzer混合参数Sθij(0)、Sθij(1)和φijk,其计算值和文献值吻合。

关键词: 电解质溶液, Pitzer方程, 高次静电项, 活度系数, 渗透系数

Abstract: The effects of the higher-order electrostatic terms on the thermodynamic properties of unsymmetrically mixed electrolytes with identical ion were investigated in the evaluation of the Pitzer mixing parameters, and the relationship between mixing parameter(θij) and ionic strength (I) was used in the evaluation.The Pitzer mixing parameters Sθij(0)、Sθij(1), and φijk were evaluated for MX-NX2 and MX-NX3 aqueous electrolyte solutions at 25℃.The calculation results are in good consistent with reference data.

Key words: Electrolyte solution, Pitzer equation, Higher-order electrostatic term, Activity coefficient, Osmotic coefficient

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