Pulse radiolysis of aqueous solutions. Some rates of reaction of OH and O– and pH dependence of the Yield of O –3

Abstract

Rate constants of the reactions of OH and O^– with NO^–₂, HCO^–₂, I^–, H₂O₂ and HO^–₂ have been measured using the carbonate competition method at pH 11 and 13. The results are consistent with the rapid establishment of the equilibrium, OH + OH^–⇌ O^–+ H₂O. The pH dependence of the yield of O^–₃ in oxygenated alkaline solution is consistent with the rapid establishment of an acid-base equilibrium, pK = 10.4, which is probably HO₃+ OH^–⇌ O^–₃+ H₂O.