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笔者认为涉及碱金属的化学计算有其特色,计算中必须突出掌握以下四种解题思想和方法:1.混合物计算必讨论—讨论法;2.变化前后钠元素必守恒—守恒法;3.Na_2O_2与CO_2、H_2O(气)反应时固体的质量增加为吸收的CO_2、H_2O与放出的O_2之间的质量差—差量法;
The author believes that the chemical calculation involving alkali metals has its own characteristics. The following four kinds of problem-solving ideas and methods must be highlighted in the calculation: 1. The mixture calculation must be discussed-discussion method; 2. The sodium element must be conserved before and after the conservation-conservation method; 3. The mass increase of solids during the reaction of Na 2 O 2 with CO 2 and H 2 O (gas) is the difference in mass between the absorbed CO 2 and H 2 O and the released O 2 - difference method.