优势区域图在分析化学教学中的应用  

Application of Predominance Area Diagram in Analytical Chemistry Teaching

作　　者：李爱峰[1] 贾文丽[1] 王术皓[1] LI Ai-Feng;JIA Wen-Li;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20期104-109,共6页Chinese Journal of Chemical Education

摘　　要：在酸碱平衡及络合平衡中,利用分布分数可以定量地说明不同条件下溶液中各种组分的分布情况,据此可以绘制优势区域图。利用优势区域图不仅能够简单、直观、方便地分析优势分布的情况,还可用于处理许多关于平衡和滴定的问题。结合具体的实例对于优势区域图的绘制及在分析化学教学中的应用进行了论述。In acid-base equilibrium and complexation equilibrium,distribution fraction is used to illustrate distribution of all types of components under various conditions.And predominance area diagram(PAD)can be drawn accordingly.Using PAD,it is simple,intuitive,and convenient to analyse dominance distribution.Furthermore,PAD can also be used to resolve many problems related to equilibrium and titration.In this paper,the authors try to discuss plotting and application of PAD in analytical chemistry teaching combined with some specific examples.

关 键 词：分析化学 优势区域图 酸碱平衡 络合平衡 酸碱滴定 络合滴定 

分 类 号：G642[文化科学—高等教育学] O65-4[文化科学—教育学]