3 SO₃^- + 2 OH^- + MnO₄^- → 3 SO₄^2- + MnO₂ + H₂O

This is an oxidation-reduction (redox) reaction:

MnO₄^- is an oxidizing agent, SO₃^- is a reducing agent.

Reactants:

• SO₃^-
• OH^- – Hydroxide
  • Other names: Hydroxide ion
• MnO₄^-

Products:

• SO₄^2- – Sulfate
  • Other names: Sulfate ion , Sulphate ion , Sulphate
• MnO₂ – Manganese oxide , Manganese(IV) oxide
  • Other names: Manganese dioxide , Pyrolusite , Hyperoxide of manganese ... show moreBlack oxide of manganese , Manganic oxide , MnO2 , MnO₂ , Manganese(IV)oxide , Manganese peroxide show less
  • Appearance: Brown-black solid ; Black-to-brown powder
• H₂O – Water, oxidane
  • Other names: Water (H2O) , Hydrogen hydroxide (HH or HOH) , Hydrogen oxide ... show moreDihydrogen monoxide (DHMO) (systematic name) , Hydrogen monoxide , Dihydrogen oxide , Hydric acid , Hydrohydroxic acid , Hydroxic acid , Hydrol , Μ-oxido dihydrogen , Κ1-hydroxyl hydrogen(0) show less
  • Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas