Question

How are the different oxides of nitrogen prepared?

Answer 1

Under different conditions, nitrogen and oxygen combine to generate a variety of oxides. The nitrogen oxidation state in these oxides ranges from +1 to +5. The chemical structures and characteristics of these oxides differ.

The methods used for the preparation of various oxides of nitrogen are as follows.

\[\ce{NH4NO3 ->[Heat] \underset{Nitrous oxide}{N2O} + 2H2O}\]

\[\ce{2NaNO2 + 2FeSO4 + 3H2SO4 -> Fe2(SO4)3 + 2NaHSO4 + 2H2O + \underset{Nitric oxide}{NO}}\]

\[\ce{2NO6N2O4 ->[250 K] \underset{Dinitrogen trioxide}{2N2O3}}\]

\[\ce{2Pb(NO3)2 ->[673 K] \underset{Nitrogen dioxide}{4NO2} + 2PbO2 + O2}\]

\[\ce{2NO2 <=>[Cool][Heat] \underset{Dinitrogen pentoxide}{N2O4}}\]

\[\ce{2HNO3 + P2O5 -> 2HPO3 + \underset{Dinitrogen pentoxide}{N2O5}}\]