Question

Some metallic oxides are amphoteric in nature. Justify with suitable example and write The balanced chemical equatoin

Answer 1

Amphoteric oxides

Amphoteric oxides are those Metal oxides that can undergo chemical reaction with both acids and bases in order to produce salts and water. There are several metals that exhibit this property. Some of the common examples are of  lead oxide and zinc oxide

The chemical reactions of Zinc oxide are;

With Acid

Reaction of ZnO with hydrochloric acid

ZnO + 2HCl = ZnCl2 + H2O.

With Base

Reaction of ZnO With sodium hydroxide

ZnO + 2NaOH = Na2ZnO2 + H2O

Answer 2

Answer:

Some metallic oxides show both acidic and basic properties.Such oxides are called as amphoteric oxidesFor Eg,Al₂O₃,ZnCo₃,etc.

               Al₂O₃ + HCl ⇒ AlCl₃  +   H₂O

Likewise  Al₂O₃  + Naoh ⇒  NaAlO₂    +H₂O