4 FeS2 + 19 Na2O2 → 8 Na2SO4 + 2 Fe2O3 + 11 Na2
This is an oxidation-reduction (redox) reaction:
8 S-I - 56 e- → 8 SVI (oxidation)
22 NaI + 22 e- → 22 Na0 (reduction)
4 FeII - 4 e- → 4 FeIII (oxidation)
38 O-I + 38 e- → 38 O-II (reduction)
FeS2 is a reducing agent, Na2O2 is an oxidizing agent, FeS2 is a reducing agent, Na2O2 is an oxidizing agent.
Reactants:
- FeS2
- Na2O2
Products:
- Na2SO4
- Fe2O3 – Iron(III) oxide
- Other names: Ferric oxide , Hematite , Ferric iron
- Appearance: Red-brown solid ; Reddish brown-to-black crystals or powder ; Reddish-brown solid. [Note: Exposure to fume may occur during the arc-welding of iron.] ; A fine, red powder of ferric oxide. [Note: Usually used in cake form or impregnated in paper or cloth.]
- Na2
Warning: Unknown compound 'Na2'