Question

How does aluminum react with the Acid ?

Answer 1

Acid: It reacts with acids to produce salt and hydrogen.

`2Al + 6HCl → 2 AlCl_3 +3H_2`

Dilute sulphuric acid reacts with metal to liberate hydrogen.

`2Al + 3H2SO_4 (dilute) → Al_2(SO_4)_3 +3H_2`

Concentrated sulphuric acid reacts with aluminium to produce sulphur dioxide.

`2Al + 6H_2SO_4 → Al2(SO4)_3 +6H_2O +3SO_2`

Dilute and concentrated nitric acid does not attack the metal aluminium.