What are amphoteric oxides

What are amphoteric oxides ? Give an example. Write balanced chemical equations to justify your answer.

Answer

Metal oxides showing both acidic and basic nature.

Example: Al₂O₃ / ZnO

Al₂O₃ + 6HCl → 2AlCl₃ + 3H₂O

Al₂O₃ + 2NaOH → 2NaAlO₂ + H₂O

• Exam Year: 2019