3 C2H5OH + Cr2O72- + 8 H+ → 3 CH3CHO + 2 (Cr)3+ + 7 H2O

This is an oxidation-reduction (redox) reaction:

3 C-II - 9 e- → 3 CI (oxidation)

3 C-II + 3 e- → 3 C-III (reduction)

2 CrVI + 6 e- → 2 CrIII (reduction)

C2H5OH is a reducing agent, C2H5OH is an oxidizing agent, Cr2O72- is an oxidizing agent.

Reactants:

  • C2H5OH – Ethanol source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: NIOSH NPG, accessed: 2019-09-02
    • Other names: Absolute alcohol source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Alcohol source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: NIOSH NPG, accessed: 2019-09-02, Cologne spirit source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: NIOSH NPG, accessed: 2019-09-02
    • Appearance: Colorless liquid source: wikipedia, accessed: 2019-09-27; Colourless liquid with characteristic odour source: ICSC, accessed: 2019-09-04; Clear, colorless liquid with a weak, ethereal, vinous odor. source: NIOSH NPG, accessed: 2019-09-02
  • Cr2O72-
  • H+

Products:

  • CH3CHO – Acetaldehyde source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Ethanal source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02
    • Other names: Acetic aldehyde source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Ethyl aldehyde source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Acetylaldehyde source: wikipedia, accessed: 2019-09-27, NSC 7594 source: wikidata, accessed: 2019-09-02
    • Appearance: Colourless liquid source: wikipedia, accessed: 2019-09-27; Gas or colourless liquid with pungent odour source: ICSC, accessed: 2019-09-04; Colorless liquid or gas (above 69°F) with a pungent, fruity odor. source: NIOSH NPG, accessed: 2019-09-02
  • Cr3+
  • H2O – Water, 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