is co2 amphoteric

No, CO2 (carbon dioxide) is not amphoteric. It is generally classified as an acidic oxide.

Here's a breakdown:

• Amphoteric oxides: These oxides can react with both acids and bases. Examples include aluminum oxide (Al2O3) and zinc oxide (ZnO).

• Acidic oxides: These oxides react with bases to form salts and water. Carbon dioxide (CO2) falls into this category. When CO2 dissolves in water, it forms carbonic acid (H2CO3), a weak acid.

Here's the reaction for CO2 dissolving in water:

CO2 (g) + H2O (l) <-> H2CO3 (aq)

While CO2 can react with bases like calcium hydroxide (Ca(OH)2) to form a salt (calcium carbonate, CaCO3) and water, this reaction doesn't truly classify CO2 as amphoteric. The initial reaction with water to form carbonic acid signifies its acidic nature.