6 NaOH (aq) + 3 Cl2 (g) NaClO3 (aq) + 5 NaCl (aq) + 3 H2O (l)

This is an oxidation-reduction (redox) reaction:

5 Cl0 + 5 e- 5 Cl-I (reduction)

Cl0 - 5 e- ClV (oxidation)

Cl2 is both an oxidizing and a reducing agent (disproportionation).

Reactants:

  • NaOH
    • Names: Sodium hydroxide source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02source: ICSC, accessed on: 2019-09-04source: NIOSH NPG, accessed on: 2019-09-02, Caustic soda source: wikidata, accessed on: 2019-09-02source: ICSC, accessed on: 2019-09-04source: NIOSH NPG, accessed on: 2019-09-02, Lye source: wikidata, accessed on: 2019-09-02
    • Appearance: White, waxy, opaque crystals source: wikipedia, accessed on: 2019-09-27; White hygroscopic solid in various forms source: ICSC, accessed on: 2019-09-04; Colorless to white, odorless solid (flakes, beads, granular form). source: NIOSH NPG, accessed on: 2019-09-02
  • Cl2
    • Names: Chlorine source: ICSC, accessed on: 2019-09-04source: NIOSH NPG, accessed on: 2019-09-02, Molecular chlorine source: NIOSH NPG, accessed on: 2019-09-02
    • Appearance: Greenish-yellow compressed liquefied gas with pungent odour source: ICSC, accessed on: 2019-09-04; Greenish-yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.] source: NIOSH NPG, accessed on: 2019-09-02

Products:

  • NaClO3Sodium chlorate source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02source: ICSC, accessed on: 2019-09-04
    • Other names: Sodium chlorate(V) source: wikipedia, accessed on: 2019-09-27, Chloric acid, sodium salt source: ICSC, accessed on: 2019-09-04
    • Appearance: Colorless or white solid, hygroscopic source: wikipedia, accessed on: 2019-09-27; Odourless colourless crystals or white granules source: ICSC, accessed on: 2019-09-04
  • NaClSodium chloride source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02
    • Other names: Salt source: wikidata, accessed on: 2019-09-02, Table salt source: wikidata, accessed on: 2019-09-02, Common salt source: wikidata, accessed on: 2019-09-02
    • Appearance: Colorless cubic crystals source: wikipedia, accessed on: 2019-09-27
  • H2OWater, oxidane source: wikipedia, accessed on: 2019-09-27
    • Other names: Water (H2O) source: wikipedia, accessed on: 2019-09-27, Hydrogen hydroxide (HH or HOH) source: wikipedia, accessed on: 2019-09-27, Hydrogen oxide source: wikipedia, accessed on: 2019-09-27
    • Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas source: wikipedia, accessed on: 2019-09-27