Make an equation: N2- NO- NO2- HNO3- Fe (NO3) 2

1) N2 + O2 = 2NO (when nitrogen interacts with oxygen, nitrogen oxide (II) is formed);

2) NO + O3 = NO2 + O2 (when nitrogen (II) oxide interacts with ozone, nitrogen oxide (IV) and oxygen are formed);

3) 3NO2 + H2O = 2HNO3 + NO (when nitrogen (IV) oxide interacts with water, nitric acid and nitrogen oxide (II) are formed);

4) 12HNO3 + 5Fe = 5Fe (NO3) 2 + N2 + 6H2O (when nitric acid interacts with iron, iron (II) nitrate, nitrogen and water are formed).