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Dependence of kobs on the concentration of HCO3– for the reactions of FeaqII with PMS and PDS – at pH 7.4. (A) PMS, [FeaqII] = 0.020 mM, [HSO5–] = 0.20 mM and (B) PDS, [FeaqII] = 0.10 mM, [S2O82–] = 1.0 mM. In both experiments, excess peroxymonosulfate (PMS) and peroxydisulfate (PDS) were used. Percentage of error = ±10.
