3 Na₂HAsO₃ + KBrO₃ + 6 HCl → 6 NaCl + KBr + 3 H₃AsO₄

This is an oxidation-reduction (redox) reaction:

KBrO₃ is an oxidizing agent, Na₂HAsO₃ is a reducing agent.

Reactants:

• Na₂HAsO₃
• KBrO₃ – Potassium bromate
  • Other names: Potassium bromate(V) , Bromic acid , Potassium salt ... show moreBromic acid, potassium salt , Potassium trioxobromate , E924 show less
  • Appearance: White crystalline powder ; White crystals or powder
• HCl – Chlorane , Hydrogen chloride
  • Other names: Hydrochloric acid , M , Uriatic acid ... show moreHydronium chloride , Chlorhydric Acid , Hydrochloric acid gas , HCl , Anhydrous hydrogen chloride , Hydrochloric acid, anhydrous , Aqueous hydrogen chloride , [Note: Often used in an aqueous solution.] show less
  • Appearance: Colorless, transparent liquid, fumes in air if concentrated ; Colorless gas ; Colourless compressed liquefied gas with pungent odour ; Colorless to slightly yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.]

Products:

• NaCl – Sodium chloride
  • Other names: {{unbulleted list , Salt , Table salt ... show moreCommon salt , NaCl , Broncho saline show less
  • Appearance: Colorless cubic crystals
• KBr
  • Names: Potassium bromide , KBr , Kaliumbromid
  • Appearance: White solid
• H₃AsO₄ – Arsenic acid, arsoric acid
  • Other names: Arsenic acid , Orthoarsenic acid , Desiccant L-10 ... show moreZotox , Arsenic acid (80% in water) , H3AsO4 , [AsO(OH)3] , Arsoric acid , Arsenic acid hemihydrate , Ortho-Arsenic acid solution show less
  • Appearance: White translucent crystals | hygroscopic. ; Colourless-to-pale-green-viscous liquid