The hydrogen electrode: what is there in the textbooks beyond E¸ = 0?

Química Nova

Universidade de São Paulo, São Paulo, Brasil¹  Osorio, Viktoria Klara Lakatos¹  Cecchini, Renato Giovanni¹  Oliveira, Wanda de¹  Tiedemann, Peter Wilhelm¹ 

关键词: hydrogen electrode;    standard conditions;    Nernst equation.;   

DOI  :  10.1590/S0100-40422009000400041

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The results of an exercise on electrochemistry for General Chemistry students are presented. The difficulty encountered by students in predicting the shift in the potential of the hydrogen electrode under non-standard conditions prompted a search in textbooks on how the subject is developed. Besides several instances of inconsistencies in defining the standard state, such as including the temperature in the definition, a number of incorrect depictions of the hydrogen electrode were discovered. Of the 28 General Chemistry books, 16 Physical Chemistry books and 24 Internet pages, 30, 20 and 46%, respectively, showed devices that would not work in practice.

【 授权许可】

Unknown