物理化学学报 >> 2003, Vol. 19 >> Issue (04): 361 -363 .doi: 10.3866/PKU.WHXB20030417

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硫酸铟水溶液热力学

王琴萍;吕殿祯;张丽;孙雪丽;洪梅;杨家振   

  1. 辽宁大学化学系, 沈阳 110036
  • 收稿日期:2002-07-15 修回日期:2002-09-25 发布日期:2003-04-15
  • 通讯作者: 王琴萍 E-mail:wqp2008@yahoo.com.cn

Thermodynamics of Indium Sulfate Solution

Wang Qin-Ping;Lü Dian-Zhen;Zhang Li;Sun Xue-Li;Hong Mei;Yang Jia-Zhen   

  1. Department of Chemistry, Liaoning University, Shenyang 110036
  • Received:2002-07-15 Revised:2002-09-25 Published:2003-04-15
  • Contact: Wang Qin-Ping E-mail:wqp2008@yahoo.com.cn

摘要: 在HCl-In2(SO4)3-H2O体系中,溶液表观总离子强度恒定为I=0.2、0.4、0.6、0.8、1.0、1.5 mol•kg-1,硫酸铟在溶液中的表观离子强度分数恒定为yB=0、0.10、0.20、0.30、0.50和0 .70条件下,应用电动势方法测定无液体接界电池(A)在278.15~318.15 K温度范围内的电动势Pt, H2(101.325 kPa)│HCl(mA),In2(SO4)3(mB),H2O│AgCl-Ag (A) 根据测得电池(A)的电动势数据,考虑到该体系存在硫酸的二级解离,应用数学迭代方法确定平衡体系氢离子的浓度,进而确定了混合溶液中HCl 的活度系数γA .

关键词: 活度系数, 电动势, 离子强度, 硫酸铟

Abstract: The thermodynamic properties of the system HCl-In2(SO4)3-H2O were studied by EMF measurement in cells without liquid junction: Pt, H2(101.325 kPa )│HCl(mA), In2(SO4)3(mB),H2O│AgCl-Ag (A) at constant total ionic strength I = 0.2、0.4、0.6、0.8、1.0、1.5 mol•kg-1 and yB=0、0.10、0.20、0.30、0.50、0.70 at different temperatures ranging from 278.15~318.15 K. The activity coefficients of HCl γA in the solution have been determined from cell (A).

Key words: Activity coefficients, EMF, Ionic strength, Indium Sulfate