Here's the balanced chemical equation for the reaction:
NH₄NO₂ → N₂ + 2H₂O
This reaction is an example of a decomposition reaction, where a single reactant breaks down into two or more simpler products. It is also a gas evolution reaction because one of the products is a gas (nitrogen).
Important Note: Ammonium nitrite is a highly unstable compound and decomposes readily, even at room temperature. This reaction can be quite exothermic (releases heat) and can be dangerous if not handled carefully.
