对微溶盐标准电极电势解法的讨论

Discussion on Computing Method of the Standard Potential of Micro-solubility Salt Electrode

通过对微溶盐标准电极电势求解例题的演算,说明微溶盐作电极对电极电势的贡献是分步进行的,一是微溶盐的解离,二是金属离子的还原反应。基于微溶盐电极的反应实质,其标准电极电势很容易计算,并且可以推广计算其它类型电极的标准电极电势。

In this paper, the standard potential of micro-solubility salt electrode is calculated by different methods, which shows that the contribution of micro-solubility salt to the standard electrode potential includes two parts. One is from dissociation of salt, the other from the reduction of metal cation. This kind of electrode potential can be readily calculated on the base of the essence of electrode reaction. The conclusion can be extended to calculate other kinds of electrode potential.