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On the mechanism of electrooxidation of hydrazine on platinum electrodes in acidic solutions
Author(s) -
García Maria D.,
Marcos Maria L.,
Velasco Jaime González
Publication year - 1996
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.1140080312
Subject(s) - platinum , hydrazine (antidepressant) , electrode , inorganic chemistry , chemistry , mechanism (biology) , electrochemistry , organic chemistry , chromatography , catalysis , philosophy , epistemology
A systematic study of the electrooxidation mechanism of hydrazine on Pt electrodes in 0.5 M H 2 SO 4 solutions has been made. The experimental rate equation found isThis can be theoretically explained by a five step mechanism. The log I vs. log C hyd linear plot that results in the determination of the reaction order respect to hydrazine concentration can be used as a working curve for quantitative analytical determination of hydrazine concentrations. A mechanistic explanation has been found for the unusual dependence of the Tafel slope with the pH value.