The chemical equation for solid cadmium hydrogen carbonate i.e. Cd(HCO3)2 to show decomposition to yield solid cadmium carbonate i.e. CdCO3, water i.e. H2O and carbon dioxide gas i.e. CO2 is shown below:
Cd(HCO3)2 = CdCO3 + H2O + CO2
or Cadmium Bicarbonate yields cadmium carbonate