KClO₃ + 3 MnO₂ + 6 NaOH → 3 Na₂MnO₄ + KCl + 3 H₂O

This is an oxidation-reduction (redox) reaction:

MnO₂ is a reducing agent, KClO₃ is an oxidizing agent.

Reactants:

• KClO₃
  • Names: Potassium chlorate , Potassium chlorate(V) , Potcrate , Potassium oxymuriate
  • Appearance: White crystals or powder ; Colourless crystals or white powder
• 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
• NaOH
  • Names: Sodium hydroxide , Caustic soda , Lye ... show moreSoda lye , Sodium hydrate , NaOH , White caustic , Lye [Sodium hydroxide] show less
  • Appearance: White, waxy, opaque crystals ; White hygroscopic solid in various forms ; Colorless to white, odorless solid (flakes, beads, granular form).

Products:

• Na₂MnO₄
• KCl
  • Names: Potassium chloride , Sylvite , Muriate of potash ... show moreKlor-Con M15 , K-Lease , Klor-Con 8 , K+10 , K+8 , Klor-Con M10 , Micro-K 10 , Kato , Kaon Cl-10 , Kaon-Cl , Kaon Cl , Micro-K , Klor-Con 10Meq , Klor-Con 10 , Micro-K Ls , K-dur , Klor-Con , Klor-Con M20 , Slow-K , Ten-K , Klotrix , [KCl] , Kaliumchlorid , Chloride of potash , Kaon-CL 10 , Klor-CON , KCl , Monopotassium chloride , K-Tab , Chlorid draselny , Potassium Chloride show less
  • Appearance: White crystalline solid ; Colourless hygroscopic crystals
• 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