4 CrO₃ + 6 NH₂ → 3 N₂ + 2 Cr₂O₃ + 6 H₂O

This is an oxidation-reduction (redox) reaction:

NH₂ is a reducing agent, CrO₃ is an oxidizing agent.

Reactants:

• CrO₃ – Chromium trioxide
  • Other names: Chromic anhydride , Chromium(VI) oxide , Chromic acid (misnomer) ... show moreChromium(vi) oxide , Chromic trioxide , [CrO3] , Anhydride chromique , Chromic oxide , Monochromium trioxide , CrO3 , Red oxide of chromium , Chromic acid show less
  • Appearance: Dark red granular solid, deliquescent ; Odourless dark red deliquescent crystals, flakes or granular powder
• NH₂

Products:

• N₂
  • Names: Dinitrogen , Nitrogen (compressed gas) , Nitrogen (liquified) ... show moreN₂ , Nitrogen gas , N2 , Nitrogen , Diazyne , Liquid nitrogen , Nitrogen (refrigerated liquid) , Nitrogen (cryogenic liquid) show less
  • Appearance: Odourless colourless compressed gas ; Odourless colourless extremely cold liquid
• Cr₂O₃
  • Names: Chromium(III) oxide , Chromium sesquioxide , Chromia ... show moreChrome green , Eskolaite , Dichromium trioxide , Chromium(iii) oxide , Green oxide of chromium , Green chromium oxide , Chromium(III) sesquioxide , Chromic oxide show less
  • Appearance: Light to dark green, fine crystals ; Light-to-dark-green powder
• H₂O – Water, oxidane
  • Other names: Water (H2O) , Hydrogen hydroxide (HH or HOH) , Hydrogen oxide ... show moreDihydrogen monoxide (DHMO) (systematic name) , Hydrogen monoxide , Dihydrogen oxide , Hydric acid , Hydrohydroxic acid , Hydroxic acid , Hydrol , Μ-oxido dihydrogen , Κ1-hydroxyl hydrogen(0) show less
  • Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas