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围绕氯酸钾(或高锰酸钾)分解反应的计算题,是化学方程式计算的一个重要内容,这类题可考查学生的知识点很多,如化学反应原理、质量守恒定律、催化剂概念、复分解反应、溶液知识、实验知识、计算技能与技巧等。对这类计算题归类如下:1 单纯KClO_3与MnO_2共热分解问题 这类问题又可分为完全分解和不完全分解两种情况,题目往往先给出反应物、残留固体的质量,可根据质量守恒定律,先确定O_2的质量,再求解。
The computational problem surrounding the decomposition reaction of potassium chlorate (or potassium permanganate) is an important part of the calculation of the chemical equations. Such questions can examine students’ knowledge points, such as chemical reaction principle, law of conservation of mass, catalyst concept, metathesis reaction, Solution knowledge, experimental knowledge, calculation skills and skills. This type of calculation is classified as follows: 1 The problem of co-thermal decomposition of pure KClO_3 and MnO_2 This type of problem can be further divided into two cases: complete decomposition and incomplete decomposition. The quality of reactants and residual solids is often given first. The law of conservation of mass determines the quality of O 2 first and then solves it.