2 ClO2 (g) + 2 NaOH (aq) NaClO3 (aq) + NaClO2 (aq) + H2O (l)

This is an oxidation-reduction (redox) reaction:

ClIV - 1 e- ClV (oxidation)

ClIV + e- ClIII (reduction)

ClO2 is both an oxidizing and a reducing agent (disproportionation).

Reactants:

  • ClO2Chlorine dioxide 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, 4-chlorane (substitutive) OR Dioxidochlorine(•) (additive) --> source: wikipedia, accessed on: 2019-09-27
    • Other names: Chlorine(IV) oxide source: wikipedia, accessed on: 2019-09-27, Chlorine oxide source: wikidata, accessed on: 2019-09-02source: ICSC, accessed on: 2019-09-04source: NIOSH NPG, accessed on: 2019-09-02, Chlorine peroxide source: wikidata, accessed on: 2019-09-02source: ICSC, accessed on: 2019-09-04source: NIOSH NPG, accessed on: 2019-09-02
    • Appearance: Yellow to reddish gas source: wikipedia, accessed on: 2019-09-27; Red-yellow gas with pungent odour source: ICSC, accessed on: 2019-09-04; Yellow to red gas or a red-brown liquid (below 52°F) with an unpleasant odor similar to chlorine and nitric acid. source: NIOSH NPG, accessed on: 2019-09-02
  • 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

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
  • NaClO2Sodium chlorite source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02source: ICSC, accessed on: 2019-09-04
    • Other names: Chlorous acid source: wikipedia, accessed on: 2019-09-27, Sodium salt source: wikipedia, accessed on: 2019-09-27, Textone source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02
    • Appearance: White solid source: wikipedia, accessed on: 2019-09-27; Slightly hygroscopic white crystals or flakes source: ICSC, accessed on: 2019-09-04
  • 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