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Reaction with Sodium Carbonate

Transition metals 2+ ions react with sodium carbonate to give insoluble carbonates.Hexaaqua 3+ ions are acidic enough for the reaction with sodium carbonate to give a precipitate of the metal hydroxide and carbon dioxide and water or hydrogencarbonate ions if the sodium carbonate is in excess.[Fe(H2O)6]2+ (aq) + CO32-
green precipitate of FeCO3
[Cu(H2O)6]2+ (aq) + CO32-
blue-green precipitate of CuCO3
[Fe(H2O)6]3+ (aq) + CO32-
brown gelatinous precipitate of [Fe(H2O)3 (OH)3 ] and bubbles of CO2
[Al(H2O)6]3+ (aq) + CO32-
white precipitate of [Al(H2O)3 (OH)3 ] and bubbles of CO2

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Specification: OCR Chemistry A (H432), A-level, 5.3.1 Transition elements. Topic: Transition Metals.

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