论文部分内容阅读
在原电池、电解和电镀的教学中,对于电极名称的判断和电极反应等问题,学生常感到困难。其原因是缺乏对上述问题本质的理解和具体分析。现归纳总结如下。一、原电池的电极名称和电极反应原电池是由化学能转变成电能的装置,现以原电池原理改进的装置往往作直流电源使用。因此,哪个电极电子较多,可以流出电子;哪个电极电子较少,可以流入电子,这在实验和应用中有着重要意义。人们把原电池电极名称规定为:
In the teaching of galvanic cells, electrolysis and electroplating, students often find it difficult to determine electrode names and react to electrodes. The reason is the lack of understanding and concrete analysis of the nature of the above issues. The summary is summarized below. First, the original battery’s electrode name and electrode reaction Primary battery is a device that converts chemical energy into electrical energy. Devices that are improved by the original battery principle are often used as DC power supplies. Therefore, which electrode has more electrons and can flow out electrons; which electrode has less electrons and can flow in electrons, which is of great significance in experiments and applications. People specify the name of the primary battery electrode as: