2 KSCN + 4 H2Cr2O7 + K2Cr2O7 → 5 Cr2O3 + 2 K2SO4 + 2 CO2 + 2 NO2 + 4 H2O
This is an oxidation-reduction (redox) reaction:
2 S-II - 16 e- → 2 SVI (oxidation)
2 N-III - 14 e- → 2 NIV (oxidation)
10 CrVI + 30 e- → 10 CrIII (reduction)
Reactants:
Products:
- Cr2O3
- K2SO4
- CO2
- 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