Question

define amphoteric oxide

Answer 1

$Here \: is \: the \: answer \: of \: your \: question$

`$\textbf{Amphoteric Oxide}$`

The metal oxides which react with both acid and base to produce salt and water is known as Amphoteric Oxide.


`$\textbf{Examples of Amphoteric Oxide}$`

1) Aluminum Oxide = Al2O3

2) Zinc Oxide = ZnO


`$\textbf{Reaction of Al2O3 with acid}$`

Al2O3 + 6(HCl) -----› 2(AlCl3) + 3(H2O).

`$\textbf{Reaction of Amphoteric Oxide with base}$`

Al2O3 + 2(NaOH) -------› 2(NaAlO2) + H2O.

Answer 2

$\textbf{Amphoteric Oxide }$

Some metals oxides shows both acidic as well as basic character.

These metal oxides are called Amphoteric oxides.

Basic character examples :

ZnO + H2SO4 ---> ZnSO4 + H2O

Al2O3 + 6HCl ---> 2AlCl3 + 3H2O

Acidic character examples :

ZnO + 2NaOH ---> Na2ZnO2 + H2O

Al2O3 + 2NaCl ----> 2NaAlO3 + H2O