3 Fe(OH)3 + Cr → Cr(OH)3 + 3 Fe(OH)2

This is an oxidation-reduction (redox) reaction:

3 FeIII + 3 e- → 3 FeII (reduction)

Cr0 - 3 e- → CrIII (oxidation)

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

Reactants:

  • Fe(OH)3
    • Cr
      • Names: Chromium source: wikidata, accessed: 2019-09-07source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Chromium metal source: NIOSH NPG, accessed: 2019-09-02, Cr source: wikidata, accessed: 2019-09-07
      • Appearance: Grey powder source: ICSC, accessed: 2019-09-04; Blue-white to steel-gray, lustrous, brittle, hard, odorless solid. source: NIOSH NPG, accessed: 2019-09-02

    Products:

    • Cr(OH)3 – Chromium(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
    • Fe(OH)2 – Iron(II) hydroxide source: wikipedia, accessed: 2019-09-27
      • Other names: Ferrous hydroxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02
      • Appearance: Green solid source: wikipedia, accessed: 2019-09-27