有关氧化还原反应的计算,是中学化学中的基本计算之一。由于这种类型的题所涉及到的反应比较复杂,尤其在出现并行反应、多步反应及混和物的综合计算时,其解题难度更大,学生很容易造成混乱。为此笔者在教学过程中尝试了用公式法解氧化还原反应计算题,收到了较好的效果。现介绍如下,以供参考。在氧化-还原反应中,反应物的组成元素间电子的得失或偏移,会引起元素氧化数 The calculation of redox reactions is one of the basic calculations in middle school chemistry. Due to the complex reactions involved in this type of questions, especially in the presence of parallel reactions, multi-step reactions, and compound calculations, the problem is more difficult to solve, and students are prone to confusion. For this reason, the author tried to use the formula method to solve the redox reaction calculation problem in the teaching process, and received good results. The introduction is as follows for reference. In the oxidation-reduction reaction, the gain or loss of the electrons between the constituent elements of the reactants may cause the oxidation number of the elements.