在无机化学中 ,判断一个反应是否是氧化—还原反应 ,只需要观察其反应前后反应物的组成元素的化合价是否发生了变化。但是 ,在有机物中碳元素的化合价一般总显“4”价 ,因此 ,按照上述元素化合价有无升降来判断有机物之间发生的氧化—还原反应显然是不行的。因而教师在这个内容 In inorganic chemistry, to determine whether a reaction is an oxidation-reduction reaction, it is only necessary to observe whether the valence of the constituent elements of the reactants before and after the reaction has changed. However, the valence of carbon in organic matter generally always shows a “4” value. Therefore, judging whether or not the above-mentioned elemental valence rises or falls to determine the oxidation-reduction reaction between organic matters is obviously not feasible. Thus teachers in this content