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电解质溶液中各微粒间的定量关系问题历来是教学的重点与难点。解决这一类问题要求能熟练掌握并灵活运用电解质溶液中的物料守恒、阴阳离子的电荷守恒及质子守恒这三大守恒关系。但近几年对三大守恒关系的考查不断拓展与延伸,又衍生出一些复杂的定量关系。本文将结合一些实例进行分析和总结。一、综合守恒问题的实质与解题策略综合守恒问题的实质是建立在三大守恒关系的基础之上,通过一些相关量之间的代数运算而得到
The quantitative relationship between the various particles in the electrolyte solution has always been the teaching of the key and difficult. Solving this kind of problem requires mastering and flexibly using the conservation of materials in the electrolyte solution, the charge conservation of the anion and the cation, and the conservation of the protons. However, in recent years, the examination of the three great conservatories has been continuously expanded and extended, and some complex quantitative relationships have also emerged. This article will be combined with some examples for analysis and summary. First, the essence of the problem of comprehensive conservation and problem solving strategy The essence of the problem of integrated conservation is based on the three conservation relations, obtained through algebraic operations between some related variables