Mercury(I) carbonate is a chemical compound of mercury belonging to the group of carbonates.
Preparation Mercury(I) carbonate is formed by precipitation of potassium carbonate or sodium carbonate with mercury(I) nitrate. A dirty white precipitate is produced, which soon turns black in the presence of excess precipitating agent, especially upon heating.
Hg2(NO3)2 + K2CO3 → Hg2CO3 + 2 KNO3
Properties Mercury(I) carbonate is a white to yellowish-brown solid. It is practically insoluble in water and ethanol, but soluble in aqueous ammonium chloride solution. The compound decomposes at approximately 130 °C.
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