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Electrode Kinetics and Activation Energy of Uranyl‐Ferron Chelate by Polarography
Author(s) -
Kao ChenFeng,
Lai TsaiTeh
Publication year - 1980
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.198000008
Subject(s) - chemistry , uranyl , polarography , activation energy , kinetics , diffusion , analytical chemistry (journal) , chelation , reaction rate constant , electrode , inorganic chemistry , ion , thermodynamics , chromatography , organic chemistry , physics , quantum mechanics
The uranyl chelate of ferron was investigated polarographically over the p H range 1.98–10.00 and ligand concentration 0.005–0.060.M. A reversible and diffusion controlled reduction wave was obtained, however, when ferron concentration below 0.02 M and p H below 5.0, it became irreversible. The chelate species identified were UO 2 (HA) 2 at p H range 2.5–7.1 and UO 2 (OH) (A) 2 −3 over p H 7.1. The electron‐transfer coefficient, rate constant, diffusion coefficient and activation energy of the reduction process were determined.