配平化学方程式的方法虽然很多，但是有的方法应用范围有限，有的方法理论较深、难度较大，学生不易掌握。因此，对化学方程式的配平，特别是遇到比较复杂的化学方程式的配平，学生往往感到困难。为了使学生不致死记硬背化学方程式 Although there are many ways to balance the chemical equations, some methods have a limited range of applications. Some methods have a deeper theory and are more difficult for students to master. Therefore, students often find it difficult to balance the chemical equations, especially the balancing of more complex chemical equations. In order to keep students from memorizing chemical equations