The Formation of CrO2+2 in the Reaction of Cr2+ + O2 in Aqueous Acid Solutions
- 1 January 1975
- journal article
- research article
- Published by Wiley in Israel Journal of Chemistry
- Vol. 13 (1) , 15-21
- https://doi.org/10.1002/ijch.197500004
Abstract
The reduction rate of Cr3+ by eaq was determined, k8 = 1.7 × 1010 M−1 s−1. The reaction of Cr2+ with O2 was studied, k2 = 1.6 × 108 M−1 s−1. The spectrum of CrO2+2 was obtained both with the pulse radiolysis method and by mixing Cr2+ with excess of O2. It was shown that CrO2+2 decays slowly to yield HCrO−4. The results suggest that the reaction of Cr2+ with O2 is a two electron transfer process.Keywords
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