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Cobaltic Carbonate

Cobaltic Carbonate does not appear to be capable of existing in the solid state. When an oxidising agent, such as hydrogen peroxide or sodium hypochlorite, is added to solutions of cobaltous salts in the presence of excess alkali hydrogen carbonate, a green solution, and in concentrated solution a green precipitate, are obtained. Job has shown that when oxidation is effected with hydrogen peroxide at ordinary temperature the green solution contains trivalent cobalt, and that for each atom of cobalt present, one molecule of carbon dioxide is evolved. Durrant concluded that the green precipitate consists essentially of cobaltic carbonate, but Metzl concluded that it is a mixture of cobaltous carbonate and cobalt cobaltite, namely:

CoCO3.CoCoO3.

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