Does aluminum oxide react with acid?
Aluminum oxide usually does not react significantly with weak acids or common acids (such as hydrochloric acid, sulfuric acid, acetic acid, etc.). This is because aluminum oxide is a stable compound and is generally not attacked by common acids.
However, under extremely acidic conditions, such as concentrated nitric acid or hydrofluoric acid, aluminum oxide may dissolve or react to some extent. This reaction is usually slow and requires a high concentration of acid to occur. Under normal conditions, aluminum oxide has good chemical stability, which makes it widely used in many industrial and laboratory applications, especially in the preparation of experimental instruments and corrosion-resistant equipment