物理化学学报 >> 1989, Vol. 5 >> Issue (05): 590-593.doi: 10.3866/PKU.WHXB19890516

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在不同温度下Cu|CuSO4|Hg2SO4-Hg电池标准电动势的确定

程志华; 李涵; 张犁天; 杨家振; 梁春余   

  1. 中国科学院长春应用化学研究所; 辽宁大学化学系
  • 收稿日期:1987-11-30 修回日期:1988-08-31 发布日期:1989-10-15
  • 通讯作者:

THE DETERMINATION OF STANDARD ELECTROMOTIVE FORCE OF CELL Cu|CuSO4|Hg2SO4-Hg AT DIFFERENT TEMPERATURES

Cheng Zhihua*; Li Han; Zhang Litian; Yang Jiazhen; Liang Chunyu   

  1. Changchun Institute of Applied Chemistry; Academia Sinica; Department of Chemistry; LiaoNing Universty; Shenyang
  • Received:1987-11-30 Revised:1988-08-31 Published:1989-10-15
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Abstract: The emfs of Cu|CuSO_4|Hg_2SO_4-Hg were determined at 5 temperature points from 278.15 K to 313.15 K. Based on the Pitzer' s Equation a polynomial approximation for the determination of standard emf, E_m, was proposed. The values of E_m obtained by author's method agree with values of E_m obtained by the extended Debye-Huckel equation within experimental errors. Compared with the extrapolation result of extended Debye-Huckel equation, the uncertainty by the selecting of parameter of ion size was avoided. By the use of polynomial approximation method the standard emf's for different type cells in the literature were also determinded. The results were more satisfactary.