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内容提要与说明本文包括沉淀—溶解平衡方面的计算与溶液浓度方面的某些计算。 (一) 沉淀—溶解平衡方面的问题范围很广,计算方法各不相同,这使初学者颇感困惑,往往有无从下手之感。本文采用划一的计算格式(共两步),使不同的问题有同一的计算方法。不但便于教员讲授、学生掌握,而且还可计算一些比较辣手的问题(见例8)。对高中化学教师的学习也会有一定帮助。
Summary and explanation This article includes calculations of the precipitation-dissolution balance and some calculations of the solution concentration. (a) The problem of precipitation-dissolution balance has a wide range of problems and the calculation methods are different. This makes beginners confused and often has no way of getting started. This article uses a uniform calculation format (a total of two steps), so that different problems have the same calculation method. Not only is it easy for teachers to teach and students master, but it can also calculate some of the more hot issues (see Example 8). There will also be some help for high school chemistry teachers.