Question

On heating blue coloured powder of copper nitrate in boiling tube, copper oxide,
oxygen gas and a brown gas X is formed. identify the type of reaction
write the reaction involved
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Answer 1

heat

Cu(NO3)2 ------> CuO (S) + X (g)

The substance X is : NO2 + O2

BALANCING THIS EQUATION :

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

This is an example of DISPLACEMENT REACTION