On heating blue colored powder of copper (II) nitrate in a boiling tube, copper oxide (black), oxygen gas and a brown gas X are formed
(c) Identify the type of reaction.
(d) What could be the pH range of the aqueous solution of the gas X?
On heating blue colored powder of copper (II) nitrate in a boiling tube, copper oxide (black), oxygen gas and a brown gas X are formed
(c) Identify the type of reaction.
(d) What could be the pH range of the aqueous solution of the gas X?

Answer: c) Thermal decomposition is the reaction that is taking place.

d) Due to the fact that NO2 dissolves in water and forms an acidic solution, pH is less than 7. (pH range below 7).