2 Cr(OH)3 + 2 Na2CO3 + 3 NaClO 2 Na2CrO4 + 3 NaCl + 2 CO2 + 3 H2O

This is an acid-base reaction (neutralization): Cr(OH)3 is an acid, Na2CO3 is a base.

This is an oxidation-reduction (redox) reaction:

3 ClI + 6 e- 3 Cl-I (reduction)

2 CrIII - 6 e- 2 CrVI (oxidation)

NaClO is an oxidizing agent, Cr(OH)3 is a reducing agent.

Reactants:

  • Cr(OH)3Chromium(3+) hydroxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02
    • Other names: Chromium(III) hydroxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Chromium (iii) hydroxide hydrate source: ICSC, accessed: 2019-09-04, Cr(OH)3 source: wikidata, accessed: 2019-09-02, Chromic (III) hydroxide hydrate source: ICSC, accessed: 2019-09-04
    • Appearance: Green, gelatinous precipitate source: wikipedia, accessed: 2019-09-27; Blue-to-green powder or black particles source: ICSC, accessed: 2019-09-04
  • Na2CO3Sodium carbonate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02
    • Other names: Soda ash source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04, Washing soda source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Soda crystals source: wikipedia, accessed: 2019-09-27
    • Appearance: White solid, hygroscopic source: wikipedia, accessed: 2019-09-27; White hygroscopic powder source: ICSC, accessed: 2019-09-04
  • NaClOSodium hypochlorite source: wikipedia, accessed: 2019-09-28
    • Other names: A source: wikipedia, accessed: 2019-09-28, Ntiformin|Bleach|Chloride of soda}}'In dilution:'C source: wikipedia, accessed: 2019-09-28, Arrel-Dakin solution|Modified Dakin's solution|Surgical chlorinated soda solution}} source: wikipedia, accessed: 2019-09-28
    • Appearance: Greenish-yellow solid (pentahydrate) source: wikipedia, accessed: 2019-09-28; Clear slightly yellow solution with characteristic odour source: ICSC, accessed: 2019-09-04; Clear slightly yellow solution with characteristic odour source: ICSC, accessed: 2019-09-04

Products:

  • Na2CrO4Sodium chromate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04
    • Other names: Chromic acid source: wikipedia, accessed: 2019-09-27, (Na2CrO4) source: wikipedia, accessed: 2019-09-27, Disodium salt source: wikipedia, accessed: 2019-09-27
    • Appearance: Yellow crystals source: wikipedia, accessed: 2019-09-27; Yellow hygroscopic crystals source: ICSC, accessed: 2019-09-04
  • NaClSodium chloride source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02
    • Other names: {{unbulleted list source: wikipedia, accessed: 2019-09-27, Salt source: wikidata, accessed: 2019-09-02, Table salt source: wikidata, accessed: 2019-09-02
    • Appearance: Colorless cubic crystals source: wikipedia, accessed: 2019-09-27
  • CO2
    • Names: Carbon dioxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, {{plainlist| source: wikipedia, accessed: 2019-09-27, CO2 source: wikidata, accessed: 2019-09-02
    • Appearance: Colorless gas source: wikipedia, accessed: 2019-09-27; Odourless colourless compressed liquefied gas source: ICSC, accessed: 2019-09-04; Colorless, odorless gas. [Note: Shipped as a liquefied compressed gas. Solid form is utilized as dry ice.] source: NIOSH NPG, accessed: 2019-09-02
  • H2OWater, oxidane source: wikipedia, accessed: 2019-09-27
    • Other names: Water (H2O) source: wikipedia, accessed: 2019-09-27, Hydrogen hydroxide (HH or HOH) source: wikipedia, accessed: 2019-09-27, Hydrogen oxide source: wikipedia, accessed: 2019-09-27
    • Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas source: wikipedia, accessed: 2019-09-27