Make up the reaction equation: N2- NH3- NO- NO2- HNO3

1. Let’s compose the equations:
Na2CO3 + 2HCl = 2NaCl + CO2 + H2O – ion exchange reaction;
CO2 + CaO = CaCO3 – compound reaction;
CaCO3 + H2O + CO2 = Ca (HCO3) 2 – exchange reaction:
2.4NH3 + 5NO2 = 4NO + 6H2O – redox reaction (ORR):
2NO + O2 = 2NO2 – OBP;
N2 + – 2e = N4 + | 2 – reducing agent;
2О + 4е = 2О2- | 1 – oxidizing agent;
Oxygen test: 4 = 4;
4NO2 + 2H2O + O2 = 4HNO3 – ОВР;
N4 + – e = N5 + | 4 – reducing agent;
2O + 4e = 2O2- | 1 – oxidizing agent;
Oxygen test: 12 = 12