NaI (aq) + 3 HOCl (aq) → 3 HCl (aq) + NaIO₃ (aq)

This is an oxidation-reduction (redox) reaction:

NaI is a reducing agent, HOCl is an oxidizing agent.

Reactants:

• NaI
  • Names: Sodium iodide , Sodium iodide (anhydrous) , NaI , Sodium monoiodide
  • Appearance: White solid | deliquescent ; Colourless-to-white hygroscopic crystals or white powder. turns brown on exposure to air
• HOCl – Hypochlorous acid, chloric(I) acid, chloranol, hydroxidochlorine
  • Other names: Hypochlorous acid , Hydrogen hypochlorite , Chlorine hydroxide ... show moreHypomide , HClO , [ClOH] , HOCl , Hypochloric acid show less
  • Appearance: Colorless aqueous solution

Products:

• 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.]
• NaIO₃
  • Names: Sodium iodate , Iodic acid , Sodium salt
  • Appearance: White orthorhombic crystals