Recharge of Oxalate Complexes of Ruthenium(III)
from Solutions with a Variable Supporting
Electrolyte Concentration

I. V. Savvi, R. K. Astakhova, S. R. Balushkina, and V. V. Malev

St. Petersburg State University, Universitetskaya nab. 7/9, St. Petersburg, 199164 Russia

Institute of Cytology, Russian Academy of Sciences, Tikhoretskii pr. 4, St. Petersburg, 194064 Russia

Received August 9, 1996; in final form, August 5, 1997

Abstract—Using recharge of trioxalate complexes of ruthenium(III) at the mercury electrode as an example,
the possibility is shown of a change in the degree of reversibility of the electrode reaction at the expense of the
₁ effect and of the transition from reversible conditions of the occurrence of this reaction in solutions contain-
ing an excess of a supporting electrolyte to irreversible, at low contents of the latter. According to an analysis
of polarization curves, the experiment is in satisfactory agreement with the basic postulates of the theory. In the
framework of the assumptions made, the most probable is the conclusion that cations of the supporting electro-
lyte take part in the occurrence of the electrode reaction.

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