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一、设计目的电解水、电解氯化铜溶液、电解饱和氯化钠溶液等实验,是初中化学、高中化学新课程教学的重点。其具有“实验数目多、所用器材多、操作步骤多、外界条件限制影响因素多”的特点,使实验精准度受到影响,特别是农村中学受实验条件(如电源等)的限制,有时几乎无法进行实验。现以电解CuCl_2溶液为例,提供一种最简单的电解实验方法供广大教师参考。
First, the design purpose Electrolytic water, electrolytic copper chloride solution, electrolytic saturated sodium chloride solution experiments, junior high school chemistry, high school chemistry new course teaching focus. It has many characteristics such as “a large number of experiments, many equipment used, many operation steps and many external factors”, which will affect the experimental accuracy. Especially in rural middle schools, the experimental conditions (such as power supply) are limited. Sometimes, Almost impossible to experiment. Now electrolytic CuCl_2 solution, for example, provide one of the most simple electrolytic test methods for the majority of teachers reference.