4 CoCl2 + 4 NH4Cl + 20 NH3 + O2 4 [Co(NH3)6]Cl3 + 2 H2O

This is an acid-base reaction (neutralization): NH4Cl is an acid, NH3 is a base.

This is a complexation reaction: [Co(NH3)6]Cl3 is the formed complex.

This is an oxidation-reduction (redox) reaction:

4 CoII - 4 e- 4 CoIII (oxidation)

2 O0 + 4 e- 2 O-II (reduction)

CoCl2 is a reducing agent, O2 is an oxidizing agent.

Reactants:

  • CoCl2Cobalt(II) chloride source: wikipedia, accessed: 2019-09-27
    • Other names: Cobaltous chloride source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04, Cobalt dichloride source: wikipedia, accessed: 2019-09-27source: ICSC, accessed: 2019-09-04, Muriate of cobalt source: wikipedia, accessed: 2019-09-27
    • Appearance: Blue crystals (anhydrous) | violet-blue (dihydrate) | rose red crystals (hexahydrate) source: wikipedia, accessed: 2019-09-27; Pale blue hygroscopic powder. turns pink on exposure to air and moisture source: ICSC, accessed: 2019-09-04
  • NH4ClAmmonium chloride source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02
    • Other names: Sal ammoniac source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04, Salmiac source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Nushadir salt source: wikipedia, accessed: 2019-09-27
    • Appearance: White solid, hygroscopic source: wikipedia, accessed: 2019-09-27; Odourless colourless-to-white hygroscopic solid in various forms source: ICSC, accessed: 2019-09-04; Finely divided, odorless, white particulate dispersed in air. source: NIOSH NPG, accessed: 2019-09-02
  • NH3
    • Names: Ammonia source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: NIOSH NPG, accessed: 2019-09-02, Azane (only intended for use in naming derivatives of ammonia) source: wikipedia, accessed: 2019-09-27, Hydrogen nitride source: wikipedia, accessed: 2019-09-27
    • Appearance: Colourless gas source: wikipedia, accessed: 2019-09-27; Colourless gas or compressed liquefied gas with pungent odour source: ICSC, accessed: 2019-09-04; Colorless gas with a pungent, suffocating odor. [Note: Shipped as a liquefied compressed gas. Easily liquefied under pressure.] source: NIOSH NPG, accessed: 2019-09-02
  • O2
    • Names: Dioxygen source: wikidata, accessed: 2019-09-07, Oxygen source: ICSC, accessed: 2019-09-04source: wikidata, accessed: 2019-09-07, Oxygen (liquefied) source: ICSC, accessed: 2019-09-04
    • Appearance: Odourless compressed gas source: ICSC, accessed: 2019-09-04; Liquefied gas. colourless-to-blue extremely cold liquid source: ICSC, accessed: 2019-09-04

Products:

  • [Co(NH3)6]Cl3
  • 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