On heating blue coloured powder of copper (II) nitrate in a boiling tube, black copper oxide, O2 and a brown gas X is formed.
- Identify the type of reaction and the gas X.
- Write balanced chemical equation of the reaction.
- Write the pH range of aqueous solution of the gas X.
(a) Decomposition or Thermal decomposition; The gas X is NO2 or (nitrogen dioxide)
(b) 2Cu(NO3)2 → 2Cu + 4NO2 + O2
(c) Range of pH is less than 7