二元弱酸中和滴定软件辅助的教学研究与实践  

Teaching Research Based on Binary Weak Acid Titration Software

作　　者：唐海霞 黄萍[1] 周霞 冉鸣[1] TANG Hai-Xia;HUANG Ping;ZHOU Xia;RAN Ming(College of Chemistry and Materials Science,Sichuan Normal University,Chengdu 610068,China)

机构地区：[1]四川师范大学化学与材料科学学院,四川成都610068

出　　处：《化学教育（中英文）》2024年第17期86-92,共7页Chinese Journal of Chemical Education

基　　金：2021年四川师范大学教改项目。

摘　　要：针对二元弱酸滴定曲线教学中存在的困难,以H_(2)C_(2)O_(4)和Na_(2)C_(2)O_(4)为例研发一款教学软件,该软件可展示滴定过程中各微粒变化图像。借助教学软件的辅助教学功能和问题驱动的教学活动设计,让学生体验对数直线和分布系数曲线的绘制原理,并探讨二元弱酸滴定曲线“特殊点”、微粒浓度大小和基于教学软件辅助习题验证等问题。In view of the difficulties in teaching the titration curve of binary weak acid,this paper develops a teaching software with H_(2)C_(2)O_(4) and Na_(2)C_(2)O_(4) as examples,which can display the change images of each particle in the titration process.With the auxiliary teaching function of teaching software and the design of problem-driven teaching activities,students can experience the drawing principle of logarithmic straight line and distribution coefficient curve,and discuss the"special points"of binary weak acid titration curve,particle concentration size and exercise verification based on teaching software.

关 键 词：二元弱酸滴定软件 电离平衡常数 曲线 微粒浓度 中学化学教学 

分 类 号：G633.8[文化科学—教育学] G434[理学—物理化学] O646.2-4[理学—化学]