AN AMPEROMETRIC STUDY OF THE REACTIONS OF COPPER(I) AND COPPER(II) OXIDES WITH BARIUM PEROXIDE IN SURFACTANT SUSPENSIONS

A study was made of the amperometric titration of the reaction between barium peroxide and copper(I) and copper(II) oxides. It was shown tha t it was possible to titrate a solid with a solid in surfactant suspen sions. The studies were made in aqueous and acetonitrile suspensions c ontaining cationic surfactants. End points were obtained at molecular ratios of BaO2 to CuO of 1:1, 1:3, and 1:5; and molecular ratios of Ba O2 to Cu2O of 1:1 and 2:1. was postulated that the reactions involving CuO were BaO2 + CuQ --> BaCuO3 BaO2 + 3CuO --> Cu3O4 + BaO or BaCu3O5 BaO2 + 5CuO --> BaCu5O7 or BaO + Cu5O6 The reactions involving Cu2O w ere postulated to be BaO2 + Cu2O --> BaCu(2)O(3)2BaO(2) + Cu2O --> Ba2 Cu2O5