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Reactions of hydrogen peroxide on a silver electrode in alkaline solution

Authors
Journal
Electrochimica Acta
0013-4686
Publisher
Elsevier
Publication Date
Volume
18
Issue
2
Identifiers
DOI: 10.1016/0013-4686(73)80008-8
Disciplines
  • Chemistry

Abstract

Abstract Reactions with hydrogen peroxide on silver in alkaline solutions with H 2O 2 concentration 5 × 10 −7 mol/ml have been studied with the ring-disk electrode. The amount of oxygen formed on the disk as the result of catalytic decomposition of hydrogen peroxide and its oxidation was established on the ring-electrode made from pyrographite. The rate constants of H 2O 2 electrochemical reduction ( k 3), its oxidation ( k′ 2) and catalytic decomposition ( k 4) and their dependence on potential have been evaluated. The constant k 4 scarcely depends on potential; it is ca 10 −2 cm/s.

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