A thermal decomposition reaction occur:
CaCO3 = CaO + CO2
nitrogen
Copper Carbonate when heated decomposes to give copper oxide and carbon dioxide.
when zinc carbonate is heated it' white colour changes to yellow . And when it is cooled it again changes to it original colour
They form magnesium oxide, copper oxide etc. and will form carbon dioxide as a byproduct.
Ammonium carbonate when heated decomposes into ammonia, carbon dioxide, and water vapor.
When copper carbonate is heated, it changes from its green color to black copper oxide.
The word equation for sodium hydrogen carbonate when heated is: sodium hydrogen carbonate (sodium bicarbonate) → sodium carbonate + carbon dioxide + water.
Lithium carbonate is thermally decomposed by heating.
when the carbonate is heated in absence of air then the CO2 is produced as the byproduct .
When sodium carbonate is heated, it decomposes into sodium oxide and carbon dioxide. The word equation for this reaction is: Sodium carbonate → Sodium oxide + Carbon dioxide.
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Sodium Carbonate
When lead carbonate is heated, it undergoes thermal decomposition to form lead oxide and carbon dioxide gas. The chemical equation for this reaction is: PbCO3(s) -> PbO(s) + CO2(g).
carbon dioxide is produced when it is heated
Carbonate by itself is an ion that does not contain copper and therefore could not produce copper if heated. However, because carbonate is a negatively charged ion, no substantial number of carbonate ions can exist stably except in association with an equal number of positively charged cations to neutralize the electrical charge of the carbonate ions. If these cations are cations of copper, then copper oxide can be produced by heating the copper carbonate salt.
CaCO3 --> CaO + CO2 Heated Calcium Carbonate (limestone) forms Calcium Oxide (quicklime) and Carbon Dioxide
nitrogen