论文部分内容阅读
一、氧化还原反应及其与四种基本反应类型的关系初中是从得氧、失氧的角度来对氧化还原反应进行定义的。这个定义是初级的,没有说明氧化还原反应的本质。现在,我们应知道:凡反应前后有电子转移(得失或偏移)的化学反应,都属于氧化还原反应(元素的化合价在反应前后有升降);反应前后化合价没有变化的反应不是氧化还原反应。四种基本类型的反应与氧化还原反应之间的关系如下表。
First, the redox reaction and its relationship with the four basic types of reaction junior high school is from the oxygen, oxygen loss point of view to define the redox reaction. This definition is primary and does not describe the nature of the redox reaction. Now, we should know that any chemical reaction with electron transfer (gain or loss) before and after reaction belongs to the redox reaction (the valence of the element goes up and down before and after the reaction); the reaction with no change in valence before and after the reaction is not an oxidation-reduction reaction. The relationship between the four basic types of reactions and redox reactions is shown in the following table.