Endothermic because thermal decomposition is the breakdown of a compound using heat. Remember endo means more energy is taken in breaking the bonds of copper carbonate than there is given out when making the bonds of copper oxide and carbon dioxide.
when copper carbonate is heated,it changes from a green to a black powder.carbondioxide gas is given off.
CaCO3 on thermal decomposition gives CaO (calcium oxide) and CO2(carbon dioxide)
The mass of products is equal to the mass of copper carbonate.
CuCO → CuO + CO2
Because it undergoes thermal decomposition. If you give heat to Copper (II) carbonate, it will decompose to form Copper (II) oxide. Instead of saying green copper carbonate, I guess it is safer and better to say copper (II) carbonate.
As it requires more energy to break the bonds of calcium carbonate,as it is more reactive meaning it combines with elements in the air and atmosphere, and copper is a less reactive metal.
Thermal decomposition.
Carbon Dioxide
Calcium carbonate --> Calcium oxide + Carbon dioxide Its an example of thermal decomposition.
Because it undergoes thermal decomposition. If you give heat to Copper (II) carbonate, it will decompose to form Copper (II) oxide. Instead of saying green copper carbonate, I guess it is safer and better to say copper (II) carbonate.
The thermal decomposition in this case is: CuCO3 -------------CuO + CO2
Here are the equations for the thermal decomposition of copper carbonate (notice that a metal oxide is formed, just as it was with calcium carbonate): Copper carbonate → copper oxide + carbon dioxide CuCO3 → CuO + CO2
Decomposition of ammonium carbonate:(NH4)2CO3 --> 2 NH3 + CO2 + H2O
i think its thermal decomposition
As it requires more energy to break the bonds of calcium carbonate,as it is more reactive meaning it combines with elements in the air and atmosphere, and copper is a less reactive metal.
Before thermal decomposition, weigh the mass. Thermally decompose. Allow to cool Re-weigh. The difference in the masses is the mass of CO2 released.
Thermal decomposition.
Seng huat
Carbon Dioxide
DECOMPOSITION
A thermal decomposition reaction occur:CaCO3 = CaO + CO2