基于铁阳极氧化过程验证法拉第定律及其应用

Faraday's Law and Its Application Based on the Anodization of Iron

法拉第定律是电化学理论的定量基础,也是大学生理解现代电化学理论的第一步。针对普通化学实验中法拉第定律相关实验进行了改进,充分考虑了高中与大学阶段化学知识体系的差异,从高中阶段所学的阿伏伽德罗常数的测定以及铁的元素化学出发,设计了阿伏伽德罗常数与电流效率的测定2个实验板块,通过铁的阳极氧化过程向学生介绍法拉第定律及其应用。通过丰富的实验现象,引导学生从高中化学知识顺利过渡到大学化学理论的学习,促进学生通过实验在已有知识基础上更进一步思考氧化还原与电化学之间的关联,深入理解法拉第定律与铁的氧化还原性质,完善自己的知识体系,提升对化学学习的兴趣。

Faraday's law is the quantitative basis of electrochemical theory and the first step for college students to understand modern electrochemical theory.This experiment improves the related experiments of Faraday's law in general chemistry experiments,taking into full consideration of the difference between the chemical knowledge system of high school and university.This experiment designs two experimental sections,which are the determinations of Avogadro constant and current efficiency,introducing Faraday's law and its application to students through the anodic oxidation process of ferrum.Based on the rich experimental phenomena,students are guided to make a smooth transition from high school chemical knowledge basis to university chemical theories,and are encouraged to think further about the connection between redox and electrochemistry on the basis of their existing knowledge through the experiments.This experiment promotes the further understanding of Faraday's law and the redox properties of ferrum,improves the knowledge system,and enhances the interest in chemistry learning of students.