Question 37
Nitrogen and its CompoundsCopper metal dissolves in concentrated trioxonitrate (V) acid with the resultant evolution of
- A.CO2
- B.SO2
- C.NO2
- D.CO
Show the answer and explanation
Answer: C (NO2)
Explanation
Cu + 4HNO3 (conc.) → Cu(NO3)2 + 2NO2 + 2H2O; brown NO2 is given off.