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

Quimica nova

Osorio, Viktoria Klara Lakatos¹  Cecchini, Renato Giovanni¹  Oliveira, Wanda de¹  Tiedemann, Peter Wilhelm¹ 

[1] Universidade de São Paulo, São Paulo, Brasil

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 ofan exercise on electrochemistry for General Chemistry students are presented.The difficulty encountered by students in predicting the shift in the potentialof the hydrogen electrode under non-standard conditions prompted a search intextbooks on how the subject is developed. Besides several instances of inconsistenciesin 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 Internetpages, 30, 20 and 46%, respectively, showed devices that would not work in practice.

【 授权许可】

CC BY