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Summary.The kinetics of the CrO(O2)2 formation by H2O2 and Cr2O72 in aqueous acidic media was measured at 2932K in a pH range between 2.5 and 3.3. Using the stopped-flow method with rapid scan UV-VIS detection, the rate law of the formation of CrO(O2)2 was determined. For the media HClO4, HNO3 and CH3COOH, the reaction order in the Cr2O72 concentration was found to be 0.5. For [H2O2] as well as for...
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