电极电势与温度关系式的测量

The Measure of Relationship Between Electrode Electromotive and Temperature

目前文献中能查到的只有一些电极电势的简单温度系数 ,很少有电极电势与温度的关系方程式。本文通过测量原电池电动势的方法 ,测量不同温度下的锌电极与铜电极的电极电势 ,用计算机线性回归处理 ,得出锌电极与铜电极的电极电势与摄氏温度的关系分别为 :φ Zn2 + / Zn=-8× 10 -6t2 +2× 10 -3 t-0 .76 39;φ Cu2 + / Cu=3× 10 -6t2 -3× 10 -3 t+0 .3413。

There are only some simple temperature coefficients of electrode electromotive and a few relation equations off electrmotive on reference books.After numerous experiments,we can deduce the relationships of the electrmotive of zinc and copper electrode between temperature represents as follows: φ  Zn 2+/Zn=-8×10 -6t 2+2×10 -3t-0.7639;φ  Cu 2+/Cu=3×10 -6t 2-3×10 -3+0.3413. The results of these experiments provide a reference,and can reduce errors caused by the changes of temperature in electrical chemistry measuring.