N2 (g) + 2 O2 (g) → 2 NO2 (l)
This is an oxidation-reduction (redox) reaction:
2 N0 - 8 e- → 2 NIV (oxidation)
4 O0 + 8 e- → 4 O-II (reduction)
N2 is a reducing agent, O2 is an oxidizing agent.
Reactants:
- N2
- O2
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.]