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一、问题提出按照传统方法演示氢气还原氧化铁实验,存在以下不足:1.实验装置比较复杂,反应时间比较长;2.实验过程需要消耗大量氢气;3.不适合学生分组实验。二、实验改进目的1.将实验微型化、集约化;2.简化操作,节约药品;3.提高实验效率及成功率。三、实验用品氧化铁粉末,磁铁,稀硫酸,锌粒,酒精灯,小试管,
First, the problem proposed In accordance with the traditional method to demonstrate hydrogen reduction of iron oxide experiments, the following deficiencies: 1. The experimental device is more complex, the reaction time is longer; 2. Experimental process requires a lot of consumption of hydrogen; 3. Not suitable for student group experiments. Second, the purpose of experimental improvement 1. The experiment miniaturization, intensive; 2. Simplify the operation, saving drugs; 3. To improve the efficiency and success rate of the experiment. Third, experimental supplies Iron oxide powder, magnets, dilute sulfuric acid, zinc tablets, alcohol lamp, a small test tube,