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燃料电池电极反应式的书写是近几年高考的热点问题。大部分中学教师在教学中通常采用传统的“三步法”讲授该内容。传统的“三步法”即先总(先写出电池总反应式)、再正(再写出正极反应式)、后负(最后利用电池总反应式减去正极反应式得负极反应式)。在考题中如果只要求写出负极反应式,按“三步法”岂不太浪费时间吗?笔者根据自己的经验摸索出一套负极反应式
Fuel cell electrode reaction writing is a hot issue in college entrance examination in recent years. Most middle school teachers in teaching usually adopt the traditional “three-step method” to teach the content. The traditional “three-step method ” that is, the first total (first write the total battery reaction), and then (rewrite positive reaction type), negative (finally the total battery reaction minus the positive reaction negative reaction formula). In the exam if only asked to write the negative reaction type, according to “three-step method ” not too waste time? The author according to their own experience to explore a set of negative reactions