Question

on heating bue coloured Powder of copper nitride in boiling tube, a black coloured compound is formed along with releasing 2 gases one is having brown fumes and another is responsible for respiration....give the reaction​

Answer 1

(i)

(ii) The brown gas X is nitrogen dioxide, NO2. (1/2)

(iii) Thermal decomposition. (1/2)

(iv) pH< 7

Reason : NO2 dissolves in water to form acidic solution (pH range below 7).

Answer 2

Answer:

The reaction is thermal decomposition. And is denoted as follows:

2Cu(NO3)2 → 2CuO + 4NO2 + O2  

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