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有关溶解度计算是继化学方程式计算之后又一个重点,也是学生感到比较棘手的难点。在学了溶解度概念后,有的学生往往死记硬背概念,而没有真正去理解溶解度概念的内涵,因而,在应用概念进行计算时,往往抓不住分析和解决问题的关键,出现了种种错误。现就学生在计算中常出现的错误加以归纳和分析。 1.不清楚一定温度下,溶质在限定溶剂中溶解的
The calculation of solubility is another important point following the calculation of the chemical equation, and it is also a difficult problem for students to feel. After learning the concept of solubility, some students often memorize concepts, but do not really understand the concept of solubility. Therefore, in the application of concepts to calculate, they often cannot grasp the key to analyze and solve problems, and there have been various errors. Now we summarize and analyze the mistakes that students frequently make in their calculations. 1. It is not known that the solute dissolves in a limited solvent at a certain temperature