Question

what areamphoteric oxides? prove that they are amphoteric in nature.

Answer 1

https://www.google.co.in/search?biw=1366&bih=662&tbm=isch&sa=1&ei=P1JPW-u-NJbt9QPZ2LO4CA&q=images+of+good+morning&oq=+images&gs_l=img.1.5.0i67k1j0l9.128139.128139.0.132120.1.1.0.0.0.0.94.94.1.1.0....0...1c.1.64.img..0.1.93....0.IOUzoT_NhZM

Answer 2

Such metal oxides such as aluminium oxide react with both acids and bases to give the products salt and water, such metallic oxides that react with both an acid and base is known as an amphoteric oxide.

Al2O3 + 6HCl --> 2AlCl3 + 3H2O
in this equation Al2O3 behaves like a base.

Al2O3 + 2NaOH --> 2NaAlO2 + H2O

(Sodium
aluminate)

In this equation it behaves like an acid.



Hope this helps :)