Kinetics of oxidation of hexacyanoferrate(II) by peroxodiphosphate

Kinetic evidence for inner sphere oxidative path was observed in the oxidation of hexacyanoferrate(II) by peroxodiphosphate at pH = 10 and 26°C. The reaction obeys the rate law suggesting the mechanism Added free ligand, CN − , effects a remarkable decrease in the reaction rate in accordance with the rate law. Effect of pH on the reaction rate was studied and evidence for free radical intermediates was obtained.