2 HNO2 → NO2 + NO + H2O
This is an oxidation-reduction (redox) reaction:
NIII + e- → NII (reduction)
NIII - 1 e- → NIV (oxidation)
HNO2 is both an oxidizing and a reducing agent (disproportionation (dismutation)).
Reactants:
Products:
- NO2 – Nitrogen dioxide
- Other names: Nitrogen(IV) oxide , Deutoxide of nitrogen , Nitrogen peroxide
- Appearance: Brown gas ; Reddish-brown gas or brown or yellow liquid with pungent odour ; Yellowish-brown liquid or reddish-brown gas (above 70°F) with a pungent, acrid odor. [Note: In solid form (below 15°F) it is found structurally as N2O4.]
- NO – Nitrogen monoxide , Oxidonitrogen(•) (additive)
- H2O – Water, oxidane