Question

Give an example for amphoteric oxide.

Answer 1

Definition:.

An amphoteric oxide is one that behaves like a base in the presence of an acid and like an acid in the presence of a base.

$\mathrm{Base}+\mathrm{Acid}\to \mathrm{Salt}+\mathrm{Water}$

Example

The reaction between zinc oxide($\mathrm{ZnO}$) and Sulphuric acid (${\mathrm{H}}_2{\mathrm{SO}}_4$) results in the formation of salt zinc sulphate (${\mathrm{ZnSO}}_4$).

Chemical equation:

.$\mathrm{ZnO}\left(\mathrm{s}\right)+{\mathrm{H}}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)\to {\mathrm{ZnSO}}_4\left(\mathrm{aq}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)$