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Kinetics and mechanism of sulfite oxidation by permanganate in basic medium
Author(s) -
Ernst Teresa,
Cyfert Maria,
Wilgocki Michal
Publication year - 1992
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550241008
Subject(s) - permanganate , chemistry , sulfite , kinetics , redox , reaction mechanism , inorganic chemistry , activation energy , catalysis , organic chemistry , physics , quantum mechanics
The kinetics of the permanganate‐sulfite redox reaction has been studied in the alkaline medium using a stopped‐flow technique. In the pH range 10 to 12 the reaction was found to obey the rate expression: −½ d [MnO 4 − ]/ dt = ( k 1 + k 2 [OH − ]) [MnO 4 − ] [SO 3 2− ]. Mechanisms for the two paths involving the formation of a (O 3 MnOSO 3 ) 3− complex prior to the rate‐determining step are consistent with the data. © John Wiley & Sons, Inc.
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