有机物发生的氧化—还原反应一般较复杂,用观察法配平化学方程式有时很困难。这是教学中的一个难点。现根据教学实践,介绍如下的方法,供同志们参考。 一、关于有机物燃烧的化学反应方程式的配平 首先将反应前后碳原子及氢原子的数目配平,然后将氧原子的个数配平。 The oxidation-reduction reactions that occur in organic matter are generally more complex and it is sometimes difficult to balance the chemical equation with observations. This is a difficult point in teaching. According to the teaching practice, the following methods are introduced for reference by comrades. First, on the balance of the chemical reaction equation of organic combustion First, the number of carbon atoms and hydrogen atoms before and after the reaction is trimmed, and then the number of oxygen atoms is trimmed.