NH₄NO₃ (aq) → 2 H₂O (l) + N₂O (g)

This is an oxidation-reduction (redox) reaction:

NH₄NO₃ is a reducing agent, NH₄NO₃ is an oxidizing agent (synproportionation (comproportionation)).

This is a gas evolution reaction, N₂O is the formed gas.

Reactants:

• NH₄NO₃ – Ammonium nitrate
  • Other names: Nitric acid, ammonium salt
  • Appearance: White/grey solid ; Colourless-to-white hygroscopic solid in various forms

Products:

• 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
• N₂O – Dinitrogen monoxide
  • Other names: Nitrous oxide , Laughing gas , Sweet air ... show moreProtoxide of nitrogen , Hyponitrous oxide , Hyponitrous acid anhydride , N2O , Nitrous , Nitro , NOS , Nitrious oxide , NNO , Diazyne 1-oxide , Factitious air , Nitrogen protoxide , E942 , R-744A , Hippie crack , Dinitrogen oxide show less
  • Appearance: Colourless gas ; Colourless compressed liquefied gas with characteristic odour ; Colorless gas with a slightly sweet odor. [inhalation anesthetic] [Note: Shipped as a liquefied compressed gas.]