Abstract
Abstract The anodic reaction of hydrogen peroxide in alkaline solutions has been studied by the polarographic method. Polarograms were recorded in solutions with pH values ranging from 10.0 to 13.5. Hydrogen peroxide in alkaline solutions shows a one-step anodic wave at the dropping mercury electrode. The plot of half-wave potential against pH consists of three segments, each corresponding to a different value of d(E1⁄2)/d(pH): −57 mV for the values of pH below 11.6, −29 mV for the pH range from 11.6 to 13.2, and 0 mV for the values of pH above 13.2 The limiting current is controlled by diffusion. It is concluded that the anodic wave corresponds to the formation of the species [Hg(O2H)(OH)].
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