Question

define amphoteric oxides? Give two examples of amphoteric oxides.​

Answer 1

Those metal oxides which react with both acids as well as base are called Amphoteric oxides.

eg - Aluminium oxide (Al2O3), Zinc oxide (ZnO).

Answer 2

Such metal oxide which react with both acids as well as bases to produce salt and water are known as amphoteric oxides.

Example :

Al2O3 + 6Hcl = 2Alcl3 + 3H2O .

Al2O3 + 2NaOH = 2NaAlO2 +H2O.