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Ceric carbonate

A yellow, gelatinous precipitate, presumably of a basic ceric carbonate, is obtained by double decomposition between a ceric salt and an alkali carbonate. The precipitate dissolves readily in concentrated potassium carbonate solution, forming a yellow solution that is stable in the air but which may be oxidised with hydrogen peroxide. The basic ceric carbonates, 2CeO2.3CO2 and 2CeO2.CO2, are obtained (combined with potassium carbonate)? by heating perceric potassium carbonate to 240° and 360° respectively.
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