NO (Nitric oxide) is synthesised in laboratory by copper with cold and dilute HNO3. 3Cu+
8HNO3
Dil.
────▸3Cu(NO3)2+
2NO
Nitric‌oxide
By reacting Zn with cold and dil. HNO3, NH4NO3 is formed. 4Zn+
10HNO3
Dil.and‌cold
────▸4Zn(NO3)2+3H2O+NH4NO3+2NO2 By reacting Zn with conc. nitric acid NO2 is formed. By heating NH4NO3, nitrous oxide is formed. NH4NO3────▸