“环境中甲醛的去除”实验及其教学功能

Experiment of“Removal of Formaldehyde in the Environment”and Its Teaching Function

鲁科版教材(2019年版)中关于环境中甲醛去除方法的实验探究活动,学生通常可以提出利用氨水和酸性高锰酸钾溶液吸收甲醛的2套实验方案。讨论了2套实验方案中的反应物、反应类型以及氨水和酸性高锰酸钾溶液是否可以吸收环境中的甲醛气体,并通过对该实验教学功能的分析提出了利用该素材进行实验教学的建议。

In chemistry textbook for senior high school(Luke edition,2019),students can usually propose two sets of experimental programs for the removal of formaldehyde in the environment:using ammonia and acidic potassium permanganate solution.This paper discusses the reactants and reaction types in the two experimental schemes,and whether ammonia and acidic potassium permanganate solution can absorb formaldehyde gas in the environment,and through the analysis of the experimental teaching function,this paper puts forward some suggestions on using this material for experimental teaching.