Ba + 2 H2SO4 → BaSO4 + SO2 + 2 H2O
This is an oxidation-reduction (redox) reaction:
SVI + 2 e- → SIV (reduction)
Ba0 - 2 e- → BaII (oxidation)
H2SO4 is an oxidizing agent, Ba is a reducing agent.
Reactants:
Products:
- BaSO4
- 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