Quimica nova | |
The hydrogen electrode: what is there in the textbooks beyond E¸ = 0? | |
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
【 预 览 】
Files | Size | Format | View |
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RO201902017857235ZK.pdf | 407KB | download |