What reaction products are formed during the interaction of concentrated nitric acid?

The formula for concentrated nitric acid is HNO3.
1) 3 H2S + 2 HNO3 = 4 H2O + 2 NO + 3 S or H2S + 8 HNO3 = 4 H2O + H2SO4 + 8 NO2 or H2S + 2 HNO3 = 2 H2O + 2 NO2 + S
Nitric acid NEVER interacts with nitric oxide
Sulfuric acid (H2SO4) and tetravalent nitric oxide (NO2) are formed
NO + 2 HNO3 = H2O + 3 NO2 tetravalent nitric oxide
H2O + HNO3 = H3NO4 (Phosphoric acid)
2) H2SO4 + HNO3 = H2O + HSO4 + NO2 obtaining a nitrating mixture
SO2 + 2 HNO3 = H2SO4 + 2 NO2 Reaction type: Double replacement



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