Answer:
When hydrochloric acid is added to an acidic oxide, it will react, producing water and a salt, indicating the acidic nature of the oxide. However, when an amphoteric oxide is exposed to aqueous sodium hydroxide, it will react to form a salt and water, confirming its amphoteric behavior. Thus, observing the reaction with hydrochloric acid and sodium hydroxide can help distinguish between acidic and amphoteric oxides based on their distinct responses to these reagents.