Kinetics of the reaction between hypochlorous acid and hexacyanoferrate(II) ion in aqueous solution
- 1 January 1988
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 2,p. 273-275
- https://doi.org/10.1039/dt9880000273
Abstract
The kinetics of the reaction of hypochlorous acid with potassium hexacyanoferrate(II) has been investigated spectrophotometrically at 25.1 °C in buffered aqueous solutions at pH 7.74 and 9.45. With HOCl in excess, the rate is given by equation (i). However, with hexacyanoferrate(II) in –d//dt [FeII]=kobs·[FeII](i), –d//dt ([FeII]0+[FeII]0–[FeIII]t)=k0([FeII]0+[FeIII]0–[FeIII]t)2[HOC]//k*([FeII]0+[FeIII]0)+(kb–k*)([FeII]0+[FeIII]0–[FeIII]t) (ii) excess, the rate is given by equation (ii). The results obtained are interpreted in terms of a reaction mechanism in which the first stage, FeII+ HOCl → Cl˙+ OH–+ FeIII, can occur either by an irreversible or reversible process.Keywords
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