由一道分析化学例题引发的思考  

The Consideration Triggered by an Example of Analytical Chemistry

作　　者：李爱峰[1] 龚树文[1] 王术皓[1] LI Ai-Feng;GONG Shu-Wen;WANG Shu-Hao(College of Chemistry and Chemical Engineering,Liaocheng University,Liaocheng 252000,China)

机构地区：[1]聊城大学化学化工学院,山东聊城252000

出　　处：《化学教育（中英文）》2020年第6期94-98,共5页Chinese Journal of Chemical Education

基　　金：聊城大学一流本科课程培育项目(Y201940)。

摘　　要：在一道分析化学例题的基础上进行拓展,对于金属指示剂应当满足的条件和间接金属指示剂的应用进行了讨论,并结合实例对于返滴定法需要注意的问题及对策进行了分析,旨在帮助学生深刻理解例题的实质,启发学生的发散思维,做到举一反三、触类旁通,提高学习效率及科学思维能力。In the present paper, the authors tried to discuss the conditions that metallochromic indicator should meet and the application of indirect metallochromic indicator based on an example of analytical chemistry. Furthermore, the authors tried to analyze a few problems which needed to pay attention and the relative solutions in back titration combined with practical examples. The purpose was to help students to understand the essence of the example, to enlighten divergent thinking, to draw inferences about other cases from one instance, and to improve learning efficiency and scientific thinking ability.

关 键 词：分析化学 滴定分析 滴定误差 金属指示剂 返滴定 

分 类 号：O655.2-4[理学—分析化学] G642[理学—化学]