SO2 (aq) + H2O2 (aq) → H2SO4 (aq)
This is an oxidation-reduction (redox) reaction:
SIV - 2 e- → SVI (oxidation)
2 O-I + 2 e- → 2 O-II (reduction)
SO2 is a reducing agent, H2O2 is an oxidizing agent.
Reactants:
- 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.]
- H2O2 – Hydrogen peroxide
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