利用“IrYdium Chemistry Lab”软件探究与量有关离子反应--以“盐酸溶液与碳酸钠溶液的正反滴定实验”为例

Using"Irydium Chemistry Lab"Software to Explore Ion Reaction Related to Quantity--Take"Positive and Negative Titration Experiment of Hydrochloric Acid Solution and Sodium Carbonate Solution"as an Example

本研究以“IrYdium Chemistry Lab”国外网络共享化学虚拟实验软件为工具,对碳酸钠溶液与盐酸溶液的正反滴定过程进行探究,并对所获得的pH值变化曲线以及碳酸根离子、碳酸氢根离子、碳酸分子的浓度变化曲线进行统计分析,从而帮助学生理解实验反应机理,以及帮助学生掌握分步反应的化学方程式。同时在实验的基础上以正反应滴定为例,对滴定液中阴阳离子所带电荷数进行计算,帮助学生构建“电荷守恒”概念。

In this study,"irydium chemistry lab"foreign network sharing chemical virtual experiment software was used as a tool to explore the forward and reverse titration process of sodium carbonate solution and hydrochloric acid solution,and the obtained pH change curve and the concentration change curve of carbonate ion,bicarbonate ion and carbonate molecule were statistically analyzed,so as to help students understand the experimental reaction mechanism,And help students master the chemical equation of step-by-step reaction.At the same time,based on the experiment,taking the positive reaction titration as an example,the charge number of cation and anion in the titration solution is calculated to help students construct the concept of"charge conservation".