Question

Why is aluminium oxide considered an amphoteric oxide?
Answer:
Aluminium oxide (Al203) shows basic as well as acidic behaviour because it reacts with both acids and bases. Thus, it is considered an amphoteric oxide. The two types of reactions given by Al203 are as follows:

Answer 1

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Answer 2

Answer:

Aluminium oxide is amphoteric. It has reactions as both a base and an acid. ... The oxide ions are held too strongly in the solid lattice to react with the water. Reaction with acids: Aluminum oxide contains oxide ions, and thus reacts with acids in the same way sodium or magnesium oxides do.

Explanation: