Question

On heating blue coloured powder of copper (II) nitrate in a boiling tube, copper oxide, a colourless gas $X$ and a brown gas $Y$ is formed.
Identify the gases $X$ and $Y$
Identify the type of chemical reaction involved.
Write a balanced chemical equation of the above reaction.

Answer 1

On heating blue coloured powder of copper (II) nitrate in a boiling tube, copper oxide (black), oxygen gas(X) and a brown gas Y is formed.
The chemical reaction involved and the balanced chemiacal equation is :
$2Cu{(NO}_3{)}_{2\left(S\right)}\underset{Heat}{\overset{}{\to }}2Cu{O}_{\left(S\right)}+4N{O}_{2\left(g\right)}+O_{2\left(g\right)}$
The product formed are copper oxide(black), nitrogen dioxide(brown) and oxygen gas(colourless gas).