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Electrode Kinetics of Concentrated Sulfide Ion in Basic Solutions
Author(s) -
Shih YenShiang,
Lai ChihChong
Publication year - 1985
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.198500069
Subject(s) - chemistry , sulfide , reaction rate constant , ion , diffusion , kinetics , electrode , sulfur , electron transfer , inorganic chemistry , limiting , order of reaction , analytical chemistry (journal) , thermodynamics , organic chemistry , mechanical engineering , physics , quantum mechanics , engineering
The diffusion coefficients of sulfide ion in 5 M NaOH solution with concentrations of (0.02–0.3) M at temperatures 24–50° C were determined using a rotating‐ring‐disc Pt electrode to be (0.5–2.0)×10 −5 cm 2 / sec . The reaction order of the sulfide oxidation to sulfur was calculated to be 0.42 which implies one‐electron transfer as the rate‐limiting step and the reaction rate constant was found to be k f =2.57×10 −5 exp(‐0.14 ZF π / RT ).