Definition: The word "ammonionitrate" refers to a chemical compound formed when ammonia (NH3) reacts with nitrate (NO3-) in solution, forming ammonium (NH4+) and nitrate (NO2-). This process occurs in aqueous solutions under acidic conditions. Definition: The chemical reaction between ammonia (NH3) and nitrate (NO3-) results in the formation of ammonium (NH4+), which is a salt. Nitrate reacts with hydrogen ions to form nitrogen gas, while ammonia combines with water molecules to form ammonium ions and hydroxide anions. This process is known as ammonium sulfate decomposition.