Question

Write your observation and a balanced equation in the case of the following substances being heated.

Copper nitrate. 

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.

\[\ce{Cu(NO3)2.3H2O ->[heat] Cu(NO3)2 + 3H2O}\]

\[\ce{2Cu(NO3)2 ->[Heat] 2CuO + 4NO2 + O2}\]