在教初中化学的过程中，我感到“氢气还原氧化铜”的实验有几个问题需要处理好，实验才易成功，取得良好的教学效果。 １．氢气的制取 为了获得充足的Ｈ２流，大家都知道用锌粒跟稀硫酸反应制取是最合适的。如果锌中含有其他金属杂质，会发生原电池反应，使放氢反应速度加快。 In the course of teaching junior high school chemistry, I felt that there were several problems in the experiment of “hydrogen reduction of copper oxide by hydrogen”. The experiment was easy to succeed and achieved good teaching results. 1. Preparation of Hydrogen In order to obtain sufficient H2 flow, we all know that it is most appropriate to use zinc particles to react with dilute sulfuric acid. If zinc contains other metal impurities, a galvanic reaction occurs and the hydrogen evolution reaction speeds up.