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根据能斯特方程,在其它条件不变的情况下,Ag/AgCl电极的电位是温度的函数。为研究温度对Ag/AgCl电极的影响,将Ag/AgCl电极放在不同浓度Na Cl溶液(0.001、0.01、0.1、0.5、1mol/L)中进行不同温度(5、15、25、35、45、55、65℃)的恒温水浴加热,进而研究Ag/AgCl在不同温度下的电位变化。结果表明:Ag/AgCl电位随温度变化不大,温度的变化对电极电位的影响较小;Na Cl浓度由大到小但对应的温度系数均较小,可忽略温度对Ag/AgCl干扰的影响。
According to the Nernst equation, the potential of the Ag / AgCl electrode is a function of temperature, with all other conditions remaining constant. In order to study the influence of temperature on Ag / AgCl electrode, Ag / AgCl electrodes were placed in different concentrations of NaCl solution (0.001,0.01,0.1,0.5,1mol / L) for different temperatures (5,15,25,35,45 , 55,65 ℃) heated water bath, and then study the potential of Ag / AgCl at different temperatures. The results showed that the potential of Ag / AgCl did not change much with the temperature and the change of temperature had little effect on the electrode potential. The temperature coefficient of NaCl decreased from large to small, but the influence of temperature on Ag / AgCl interference could be neglected .