2 H2SO4 (aq) → 2 SO2 (aq) + 2 H2O (l) + O2 (g)
This is an oxidation-reduction (redox) reaction:
2 SVI + 4 e- → 2 SIV (reduction)
2 O-II - 4 e- → 2 O0 (oxidation)
H2SO4 is an oxidizing agent, H2SO4 is a reducing agent.
This is a gas evolution reaction, O2 is the formed gas.
Reactants:
Products:
- SO2 – Sulfur dioxide
- Other names: Sulfurous anhydride , Sulphur dioxide , Sulfurous acid anhydride
- Appearance: Colorless gas ; Colourless gas or compressed liquefied gas with pungent odour ; Colorless gas with a characteristic, irritating, pungent odor. [Note: A liquid below 14°F. Shipped as a liquefied compressed gas.]
- H2O – Water, oxidane
- O2