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氯水的漂白实验是人教版高一化学上学期第四章第二节“富集在海水中的元素——氯”中的一个实验。该实验是氯元素知识中的重点实验,对学生掌握氯元素有着至关重要的作用。一、目前该实验存在缺陷1.制造氯气过程中会有氯气溢出,特别是做学生分组实验的时候,教室将漂浮着大量氯气,严重危害师生的身体健康。2.氯气能溶于水,同时在氯水中也存在一些不溶于水的氯气,致使学生不能很好地判断起到漂白作用的是氯水还是氯气。
Chlorine water bleaching experiment is one of the experiments taught in the second edition of Chapter 4 of “People Enriching in Seawater - Chlorine”. This experiment is a key experiment in the knowledge of chlorine and plays a crucial role in students’ ability to master chlorine. First, there is a flaw in the experiment at the moment 1. Chlorine overflow occurs in the process of making chlorine gas, especially when doing grouping experiments with students, the classroom will float a large amount of chlorine, seriously damaging the health of teachers and students. 2. Chlorine gas is soluble in water, and at the same time there is some water-insoluble chlorine in the chlorine water, causing students not to judge well whether chlorine or chlorine is the bleaching effect.