General Science • ChemistryMedium
Which of the following compounds is classified as an amphoteric oxide?
A. Na2O
B. CO2
C. ZnO✓ Correct Answer
D. SO2
💡 Solution & Explanation
Zinc oxide is a classic amphoteric oxide because it reacts with acids to produce zinc salts and water while also reacting with strong alkalis like sodium hydroxide to form soluble zincates. In contrast, sodium oxide is strongly basic, and carbon dioxide is acidic in chemical nature. Knowledge of acid-base oxide classifications is a staple requirement for chemistry competitive examinations.
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