Which of the following compounds is an amphoteric oxide? (2022)

Which of the following compounds is an amphoteric oxide? (2022)

Step 1: Understand what an amphoteric oxide is. An amphoteric oxide is a type of oxide that can react with both acids and bases.
Step 2: Identify the compounds given in the question. Look for aluminum oxide (Al2O3) among them.
Step 3: Check if aluminum oxide (Al2O3) can react with an acid. It can react with hydrochloric acid (HCl) to form aluminum chloride (AlCl3).
Step 4: Check if aluminum oxide (Al2O3) can react with a base. It can react with sodium hydroxide (NaOH) to form sodium aluminate.
Step 5: Conclude that since aluminum oxide (Al2O3) can react with both acids and bases, it is indeed an amphoteric oxide.

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