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The dissociation constant of I3− in the voltammetric behaviour of the iodine—iodide couple

✍ Scribed by R. Guidelli; G. Piccardi

Publisher
Elsevier Science
Year
1967
Tongue
English
Weight
657 KB
Volume
12
Category
Article
ISSN
0013-4686

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✦ Synopsis

The theoretical polarographic characteristic of the iodine-iodide system has been derived, taking into account the dissociation constant of Is-. The range of applicability of some approximate expressions has been determined. The agreement between the theoretical and experimental polarograms has been verified in acetonitrile and in aqueous 1 M HClO,. R&am&On a obtenu I'equation du courant polarographique du systeme iode-iodure, compte tenu de la constante de dissociation de I*-. On a determine aussi le domaine de validite de quelques kquations simplifkes. On a v&it% l'accord entre les vagues thkoriques et c&es exptkimentales dans l'acetonitrile et dans des solutions aqueuses de HCI04. Zasamm&swmg-_Die Rexiehungen ftir das polarographische Verhalten des Iod-Iodid-Systems wurden unter Reriicksichtigung der Dissoxiationskonstanten von I.-abgeleitet. Man ermittelte den Anwendun@ereich einiger angenilherter Reziehungen. Die Ubereinstimmung xwischen den theoretischen turd experimentellen Polarogrammen in Acetonytril und in wksriger 1M HClO, wurde veriflxiert.

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