Question

What happens when copper nitrate undergoes heating?

Answer 1

Copper nitrate is a blue coloured crystal.

When copper nitrate is heated it loses the water molecule and then when is further heated it decomposes to give reddish brown gas, nitrogen dioxide and oxygen.

Cu(NO3)2.3H2O --heat--> Cu(NO3)2 + 3H2O

2Cu(NO3)2 --heat--> 2CuO + 4NO2 + O2

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Answer 2

Explanation:

When copper nitrate heated first heat losses the water molecule, on further heating it decomposes to give reddish brown gas Nitrogen dioxide and oxygen. The greenish blue crystals of copper nitrate will change to black residue of copper oxide and give reddish brown gas i.e., nitrogen dioxide on heating