B2O3 + 3H2O → 2H3BO3
In this reaction, the boron atoms in boron oxide react with the oxygen atoms in water molecules to form boric acid molecules. The reaction is exothermic, meaning that it releases heat.
Boric acid is a weak acid that is soluble in water. It can be used as a mild antiseptic and eyewash. Boric acid is also used in the manufacture of other boron compounds, such as sodium borate (borax) and borosilicate glass.
