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关于氧化—还原反应方程式的配平,中学化学教材里介绍的是化合价升高和降低的总数相等的方法。有一些物质,在反应中既作氧化剂,又作还原剂,也就是说,这些物质所起的反应属于分子内部的氧化—还原反应(同一物质中的同种元素既作氧化剂又作还原剂的氧化—还原反应又称歧化反应或自身氧化还原反应,如 CI_2+H_2O=HCI+HCIO)。这类反应较为简单,有时用奇数配偶法或观
With regard to the balancing of the oxidation-reduction equations, the middle school chemistry textbook describes methods for equalizing the total increase and decrease in valence. There are substances that act both as oxidants and as reducing agents in the reaction. That is to say, the reactions of these substances are internal oxidation-reduction reactions (the same elements in the same substance act both as oxidants and as reducing agents. Oxidation-reduction reaction is also called disproportionation reaction or auto oxidation-reduction reaction, such as CI_2+H_2O=HCI+HCIO). This type of response is relatively simple, sometimes using odd-numbered mates or