What is NH4NO2? Important knowledge about NH4NO2.

Definition of NH₄NO₂
NH₄NO₂, also known as Ammonium nitrite, is a chemical substance with the molecular formula NH₄NO₂. In this name, NH₄ is the ammonium ion and NO₂ is the nitrite ion. Its English name is Ammonium nitrite. The atomic mass of the ammonium ion is 18 atomic mass units, while the atomic mass of the nitrite ion is 46.0055 atomic mass units. In the NH₄NO₂ molecule, the ammonium and nitrite ions are connected to each other through an ionic bond.

Properties of NH₄NO₂
NH₄NO₂ is a white, odorless solid, its state at room temperature is solid. Its pH level is 7, meaning it is a neutral substance. The most characteristic chemical property of NH₄NO₂ is its ability to quickly decompose thermally to produce dinitrogen, N₂.

Common chemical equation involving NH₄NO₂
The most common reaction of NH₄NO₂ is the thermal decomposition reaction:
NH₄NO₂(s) → N₂(g) + 2H₂O(g) ->

Preparation of NH₄NO₂
NH₄NO₂ cannot be completely prepared in the laboratory due to its fast decomposition ability. However, it can be synthesized through the reaction between ammonia and strong nitric acid:
NH₃(g) + HNO₂(aq) -> NH₄NO₂(s)
But the industrial preparation of NH₄NO₂ is also not common due to the instability of this substance.