Metal Carbonate
Alkaline earth metals like calcium and magnesium typically form compounds with the general formula M2CO3, where M represents the metal cation.
There are many oxides of carbon (oxocarbons), of which the most common are carbon dioxide (CO2) and carbon monoxide (CO).Other less known oxides include carbon suboxide (C3O2) and mellitic anhydride (C12O9).There are also numerous unstable or elusive oxides, such as dicarbon monoxide (C2O), oxalic anhydride (C2O4), and carbon trioxide (CO3).
thermal decomposition of sodium hydrogen carbonate 2 NaHCO3 (s)-------> Na2CO3 (s) + H2O (l) + CO2 (g) Above the yield sign is heat because it is thermal decompostion 2 NaHCO3 (s)-------> Na2CO3 (s) + H2O (l) + CO2 (g) limewater test for carbon dioxide Ca(OH)2 (aq) + CO3 (g) -------> CaCO3 (s) + H2O (l)