N2------------>NH3---------->NO--------> NO2------------>HNO3------------> AgNO3
N2 + H2 --- NH3
4NH3 + 5 O2 --- 4 NO + 6 H2O
2NO + O2 --- 2NO2
4NO2 +O2 + 2H2O --- 4HNO3
2HNO3( конц) + Ag --- AgNO3 + NO2 + H2O
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