Which One of the Following is an Amphoteric Oxide?

Amphoteric oxides

These have both basic and acidic characteristics.

Al₂ O₃ , SiO₂ is an example of Amphoteric oxide.

Al₂ O₃ + 2NaOH (Base) → 2NaAlO₂ + H₂ O

Al₂ O₃ + 6HCl (acid) → 2AlCl₃ + 3H₂ O

CO₂:

It is a nonmetallic oxide that has an acidic chemistry.

An oxide is referred to as acidic if it reacts with water to form an acid.

CO₂ carbonic acid is created by interaction with water (H₂ CO₃).

SO₂ :

It is an acidic non-metallic oxide as well.

SO₂ +H₂ O→H₂ SO₃ (Sulfurous acid).

CuO:

This oxide is basic.

Cu thus does not produce amphoteric oxide.

Summary:-

Which One of the Following is an Amphoteric Oxide? 1. Al₂O₃ 2. CO₂ 3. SO₂ 4. CuO

Al₂ O₃ is an amphoteric oxide which has both basic and acidic properties resulting in the formation of salt and water

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