Kinetics of reaction between vanadium(V) and iodide ions in the presence of oxygen
- 1 January 1974
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 8,p. 793-795
- https://doi.org/10.1039/dt9740000793
Abstract
The kinetics of reduction of vanadium(V) by iodide ions in aqueous solution have been investigated in the presence of oxygen at 25 °C and ionic strength 0·4M(NaClO4). The results show that the reaction occurs through two parallel paths (i), the first being oxygen-independent, the second involving a molecule of O2. The term b(s–1)v=a+b[O2](i) is given by equation (ii). The mechanism of the oxygen-dependent path involves formation of a peroxovanadium(V)b=(3·3 ± 0·5)× 103[H4VO4 +][I–]2[H+]2(ii) intermediate, [VO(O2)]+, which, rapidly reacting with iodide ions, regenerates vanadium(V), VO2 +, ions.Keywords
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