Which of the following metallic oxides is amphoteric?

Assessment: WAEC SSCE - Chemistry - 2011 (Objective) Subject: Chemistry

Question 1 Report

Which of the following metallic oxides is amphoteric?
Answer Details
An amphoteric oxide is one that can react as both an acid and a base. This means that it can react with both acids and bases to form salts. The only oxide listed that can do this is aluminum oxide (Al2O3). Therefore, the answer is AI2O3. MgO and Na2O are basic oxides, which means they react with acids to form salts. Fe2O3 is an acidic oxide, which means it reacts with bases to form salts.
Read lesson note on Acids, Bases And Salts (Ghana Only) (WAEC)
Read lesson note on Periodic Chemistry (Ghana Only) (WAEC)
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