I2 + 8 H+ + 10 NO3- → 4 H2O + 10 NO2 + 2 IO3-
This is an oxidation-reduction (redox) reaction:
2 I0 - 10 e- → 2 IV (oxidation)
10 NV + 10 e- → 10 NIV (reduction)
I2 is a reducing agent, NO3- is an oxidizing agent.
Reactants:
Products:
- H2O – Water, oxidane
- 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.]
- IO3-