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义务教育课程标准(九年级)关于“水的电解实验”(图1),是一个较好的验证性实验,但笔者认为该实验存在几个方面的不足:1.电极不固定,不利于气体收集;2.收集的试管没有固定,不方便操作;3.为了增强溶液的导电性,往往要在水中加入5%～15%的氢氧化钠或10%～15%的稀硫酸,教师在操作实验时容易造成手腐蚀。
The compulsory education curriculum standard (ninth grade) about “water electrolysis experiment” (Figure 1) is a good confirmatory experiment, but the author believes that this experiment has several shortcomings: 1. The electrode is not fixed, not conducive to gas Collect; 2. Collection of the test tube is not fixed, inconvenient operation; 3. In order to enhance the conductivity of the solution, often add 5% to 15% of sodium hydroxide or 10% to 15% of dilute sulfuric acid in water, the teacher in operation It is easy to cause hand corrosion during the experiment.