what is Amphoteric oxide?
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Answer:
"Amphoteric oxides are the oxides that behave as both acidic and basic oxides. Amphoteric Oxides have features of acidic as well as basic oxides that neutralize both acids and bases.”
Amphoteric oxides dissolve in water to form alkaline solutions. Alkaline solutions contain hydroxide ions. Thus aluminium oxide (Al2O3) reacts with hydrochloric acid to form aluminium chloride and water. With sodium hydroxide solution it forms sodium aluminate (NaAlO2) and water. Other common examples of amphoteric oxides include ZnO, SnO and PbO.
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Answer:
An amphoteric oxide is an oxide that can act as either an acid or base in a reaction to produce a salt and water. Because metals have multiple oxidation states, they form amphoteric oxides and hydroxides.