10 NaNO2 (aq) + 2 KMnO4 (aq) + 8 H2SO4 (aq) → 5 Na2SO4 (aq) + 2 MnSO4 (aq) + K2SO4 (aq) + 10 NO2 (l) + 8 H2O (l)
This is an oxidation-reduction (redox) reaction:
2 MnVII + 10 e- → 2 MnII (reduction)
10 NIII - 10 e- → 10 NIV (oxidation)
KMnO4 is an oxidizing agent, NaNO2 is a reducing agent.
Reactants:
Products:
- Na2SO4
- MnSO4 – Manganese(II) sulfate
- K2SO4
- 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.]
- H2O – Water, oxidane