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|Title:||Kinetics of electron transfer between dodecatungstocobaltate(III) and thiosulfate in weak acidic medium|
Saha, Swapan K
|Abstract:||The kinetics of oxidation of thiosulfate ion by dodecatungstocobaltate(III) has been studied in the pH range of 4.20-5.20. The reaction is first order with respect to both the complex and thiosulfate concentrations. An alkali metal ion (M+) catalysis has been observed and is consistent with a rate law: k = (k0 + k1[M+])[S2O] [complex] where ko accounts for the uncatalysed path and k1, the alkali metal ion catalysed path. A reaction mechanism is proposed considering an outer-sphere association between the complex and thiosulfate ions and bridging by the alkali cations is assumed to be responsible for the catalysis phenomenon.|
|Appears in Collections:||IJC-A Vol.29A(06) [June 1990]|
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