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配平化学方程式的方法,种类繁多。但各有其缺点,有的适用范围很狭窄,如:观察法,最小公倍数法,奇数配偶法,离子-电子法等。有的很繁琐,如:待定系数法(即代数法)。目前。普遍采用的是氧化数法,然而它仍有美中不足之处,它对非氧化还原反应仍不适用,同时,对氧化数难以确定的氧化还原反应的配平仍束手无策。而“定复杂分子式系数为1和a的方法”(以下简称“定1和a”的方法)。它有简便易学,适用范围广等优点。
There are many ways to balance the chemical equations. However, each has its own shortcomings, and some have narrow scope of application, such as: observation method, least common multiple method, odd-numbered spouse method, ion-electronic method, etc. Some are very tedious, such as: undetermined coefficient method (ie, algebraic method). Currently. The oxidation number method is widely used. However, it still has some drawbacks. It is still not suitable for non-redox reactions. At the same time, the redox reaction is difficult to determine the balance of the number of oxidation is still in vain. The “method for determining the coefficient of a complex formula is 1 and a” (hereinafter referred to as the “fix 1 and a” method). It has the advantages of easy learning and wide application.