Abstract

AbstractThe polarography of alkaline permanganate solutions in presence of telluric acid has been studied. It is shown that reduction of Mn+7 passes through an ill‐defined zero wave to Mn+3. This latter is then reduced to Mn+2 along a sloping wave. The waves of telluric acid and the Mn+2‐Mn are vitiated by the precipitation of manganous tellurate. The lowering of id of the Mn+7/Mn+2 wave and the early reduction of telluric acid indicates the formation of a double salt between permanganate (A) and tellurate (B) of the formula AB2.

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