化学学习中常会遇到需用计算来解决的化学问题,有些同学往往在很简单的化学计算中出错,这是为什么呢?主要原因是没有把握住化学计算解题的特点。化学计算解题的特点是,以化学原理为基础,以数学计算为手段,解决化学反应及化学变化过程中物质之间转换的数量关系,就是说,必须用“化学”来指导“计算”,下面来分析一下几种基础类型的化学计算所依据的化学原理。 Chemical learning often encounters chemical problems that need to be solved by calculations. Some students often make mistakes in simple chemical calculations. Why is this? The main reason is that they do not grasp the characteristics of solving problems in chemical calculations. The problem of chemical calculation problem solving is to solve the quantitative relationship between substances in chemical reactions and chemical changes based on chemical principles and mathematical calculations. That is to say, “chemistry” must be used to guide “calculation”. Let us analyze the chemical principles underlying several basic types of chemical calculations.