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本文测定了Hg-Hg_2SO_4电极在5-50℃范围内十个温度下的标准电极电势,并用最小二乘法求得其标准电极电势的温度系数公式:E_t°=614.229-[763.4(t-25)+3.317(t-25)~2++0.03356(t-25)~3]×10~(-3)mV所得结果的精密度比文献值高一个数量级。
In this paper, the standard electrode potential of Hg-Hg_2SO_4 electrode at ten temperatures in the range of 5-50 ℃ was measured and the temperature coefficient of the standard electrode potential was calculated by the least square method: E_t ° = 614.229- [763.4 (t-25) +3.317 (t-25) ~ 2 ++ 0.03356 (t-25) ~ 3] × 10 ~ (-3) mV The accuracy of the results obtained is an order of magnitude higher than the literature value.