32.Assertion (A) : Aluminum oxide and zinc oxide are acidic in nature. Reason(R): Amphoteric nature means that substances have both acidic and basic character.
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Both assertion and reason are correct
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The assertion that aluminium oxide and zinc oxide are acidic in nature is false while the reason amphoteric nature means that substances have both acidic and basic character is true.
To find the correct answer, we need to know about metal oxides.
What are metal oxides?
- A metal oxide is a chemical generated when a metal reacts with oxygen.
- Generally, metal oxides are basic. However, few metal oxides show amphoteric behaviour.
- Metal oxides categorised as amphoteric oxides react with both acids and bases to produce salt and water. Aluminium oxide and zinc oxide are two examples of amphoteric oxides.
Hence, we can conclude that Aluminium oxide and zinc oxide are not exactly acidic oxides as they show dual nature. So, the assertion is false and the reason is true.
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