电解氯化铜溶液是普通高中课程标准实验教科书化学选修4第92页电解原理的一个演示实验,装置如图1所示。该实验在以下几个方面存在不足之处:一是电极反应速度太慢,导致6min后才能观察到实验现象,并且析出红色铜的量很少;二是需要的电压比较高(16V),如果用干电池的话需要太多;三是氯化铜溶液的体积分数要 Electrolytic cupric chloride solution is a demonstrative experiment of electrolysis principle, which is shown in Figure 1. The experiment has the following deficiencies in the following aspects: First, the electrode reaction speed is too slow, resulting in 6min after the observed phenomena, and the amount of red copper precipitation is small; the second is the required voltage is relatively high (16V), if Use dry batteries, then need too much; Third, the volume fraction of copper chloride solution to