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Determination of kinetic parameters of the electrode reaction of hydrated zinc ions by the polarographic and the potentiostatic methods

✍ Scribed by N. Tanaka; Y. Aoki; A. Yamada


Publisher
Elsevier Science
Year
1969
Tongue
English
Weight
581 KB
Volume
14
Category
Article
ISSN
0013-4686

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✦ Synopsis


Kinetic parameters of the electrode reaction of the Zn&+/Zn(Hg) electrode have been determined at various concentrations of supporting electrolyte by the polarographic and the potentiostatic methods. The corrections for the effect of the electrical double layer have been made on these parameters. At lower concentrations of supporting electrolyte, however, the corrected standard rate constants were found to decrease to some extent with decreasing concentrations of the supporting electrolyte.

R&m&-D&termination, au moyen de methodes polarographique et potentiostatique, des parametres ci&iques de la rCaction g l'blectrode Zn*+/Zn(Hg) pour diffbrentes concentrations de l'&ctrolytesupport. Les corrections relatives 51 l'effet de la couche double electrique ont &tB faites sur ces para-m&es. Pour de faibles concentrations de l'Blectrolyte-support, cependant, les constantes de vitesse standard corrigkes ont BtB trouv6es dCcroltre quelque peu quand les concentrations de l'blectrolytesupport diminuent. Zusammenfassung-Mittels polarographischer und potentiostatischer Methoden wurden die kinetisthen Parameter der Elektrodenreaktion der Zn .,+*/Zn(Hg)-Elektrode bei verschiedenen Konzentrationen an Leitelektrolyt bestimmt. Diese Parameter wurden fiir den Einiluss der elektrischen Doppelshicht korrigiert. Man fand jedoch, dass bei kleinem Leitelektrolyt-Konzentrationen die korrigierten Standardgeschwindigkeitskonstanten mit abnehmender Konzentration an Leitelektrolyt abnehmen. Tokyo (Nikko1 BL-10).

All other chemicals used were of analytical reagent grade.

Redistilled

water was used throughout this study.


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