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

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

Options:

Correct Answer: Al2O3

Exam Year: 2022

Solution:

Aluminum oxide (Al2O3) is an amphoteric oxide, meaning it can react with both acids and bases.

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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