2 NH4Cl + K2Cr2O7 N2 + Cr2O3 + 2 HCl + 2 KOH + 2 H2O

This is an oxidation-reduction (redox) reaction:

2 N-III - 6 e- 2 N0 (oxidation)

2 CrVI + 6 e- 2 CrIII (reduction)

NH4Cl is a reducing agent, K2Cr2O7 is an oxidizing agent.

Reactants:

  • NH4ClAmmonium chloride 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
    • Other names: Sal ammoniac source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02source: ICSC, accessed on: 2019-09-04, Salmiac source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02, Nushadir salt source: wikipedia, accessed on: 2019-09-27
    • Appearance: White solid, hygroscopic source: wikipedia, accessed on: 2019-09-27; Odourless colourless-to-white hygroscopic solid in various forms source: ICSC, accessed on: 2019-09-04; Finely divided, odorless, white particulate dispersed in air. source: NIOSH NPG, accessed on: 2019-09-02
  • K2Cr2O7Potassium dichromate(VI) source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02
    • Other names: Potassium dichromate source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02source: ICSC, accessed on: 2019-09-04, Chromium potassium oxide source: wikidata, accessed on: 2019-09-02, Dipotassium dichromium heptaoxide source: wikidata, accessed on: 2019-09-02
    • Appearance: Red-orange crystalline solid source: wikipedia, accessed on: 2019-09-27; Orange-to-red crystals source: ICSC, accessed on: 2019-09-04

Products:

  • N2
    • Names: Dinitrogen source: wikidata, accessed on: 2019-09-07, Nitrogen (compressed gas) source: ICSC, accessed on: 2019-09-04, Nitrogen (liquified) source: ICSC, accessed on: 2019-09-04
    • Appearance: Odourless colourless compressed gas source: ICSC, accessed on: 2019-09-04; Odourless colourless extremely cold liquid source: ICSC, accessed on: 2019-09-04
  • Cr2O3
    • Names: Chromium(III) oxide source: wikipedia, accessed on: 2019-09-27, Chromium sesquioxide source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02, Chromia source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02
    • Appearance: Light to dark green, fine crystals source: wikipedia, accessed on: 2019-09-27; Light-to-dark-green powder source: ICSC, accessed on: 2019-09-04
  • HClChlorane source: wikipedia, accessed on: 2019-09-27, Hydrogen chloride 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
    • Other names: Hydrochloric acid source: wikipedia, accessed on: 2019-09-27source: NIOSH NPG, accessed on: 2019-09-02, Hydrochloric acid gas source: wikipedia, accessed on: 2019-09-27, HCl source: wikidata, accessed on: 2019-09-02
    • Appearance: Colorless, transparent liquid, fumes in air if concentrated source: wikipedia, accessed on: 2019-09-27; Colorless gas source: wikipedia, accessed on: 2019-09-27; Colourless compressed liquefied gas with pungent odour source: ICSC, accessed on: 2019-09-04; Colorless to slightly yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.] source: NIOSH NPG, accessed on: 2019-09-02
  • KOHPotassium 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
    • Other names: Caustic potash 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, Lye source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02, Potash lye source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02
    • Appearance: White solid, deliquescent source: wikipedia, accessed on: 2019-09-27; White hygroscopic solid in various forms source: ICSC, accessed on: 2019-09-04; Odorless, white or slightly yellow lumps, rods, flakes, sticks, or pellets. [Note: May be used as an aqueous solution.] source: NIOSH NPG, accessed on: 2019-09-02
  • 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