电极电势计算器的设计开发与教学应用

Development and Teaching Application of Electrode Potential Calculator

电极电势是化学基础课教学中重要的物理量和基础数据,将现代信息化Python技术与电极电势教学深度融合,自主设计、开发了一款图形用户界面电极电势计算器。结合具体应用实例,以物料平衡和电荷平衡2个基本定量关系为基础,利用电对的电极还原反应和电极电势Nernst方程,首先介绍了计算器分别从标准电极电势和条件电极电势出发快速计算获取非标准状态下电极电势的2种途径,之后重点讨论了盐效应作用或酸效应、沉淀生成效应和配合物生成效应等副反应存在下电对条件电极电势的估算。电极电势计算器界面设计简洁,操作方便,具有较强的开放性、灵活性和普适性,无需安装和专业编程知识,可直接在Windows平台上运行,便于教师教学和学生自主探究学习。

Electrode potential is an important physical quantity and basic data in the teaching of basic chemistry courses.By deeply integrating modern information Python technology with electrode potential teaching,we have independently developed a graphical user interface(GUI)electrode potential calculator.Based on the two basic quantitative relationships of material balance and charge balance,combined with specific application examples,using the electrode reduction reaction of electric pairs and Nernst equation of electrode potential,this paper first introduces two ways for calculators to quickly calculate and obtain electrode potential in non-standard states,starting from standard electrode potential and conditional electrode potential,respectively.Afterwards,we focused on the estimation of the conditional electrode potential under the presence of salt effect or side reactions,such as acid effect,precipitation generation effect and complex generation effect.The interface design of the electrode potential calculator is simple,easy to operate,and has strong openness,flexibility,and universality.It does not require installation and professional programming knowledge,and can be directly run on the Windows platform,making it easy for teachers to teach and students to learn independently.