Question

What happens when:
1) ​Aluminium metal reacts with dilute HCL.
2) Potassium oxide is dissolved in water?
3) Sodium hydroxide reacts with sulphuric acid completely?

Answer 1

Dear student
1)Aluminium metal reacts with HCl to give Aluminium chloride and Hydrogen gas.
2Al (s) + 6HCl(aq) $\to$ 2AlCl₃(aq) + 3H₂(g)

2)Potassium oxide is dissolve in water to give Potassium hydroxide.
K₂O (s) + H₂O(l) $\to$ 2KOH (aq)

3)Sodium hydroxide reacts with sulphuric acid to form sodium sulphate and water
NaOH(aq) + H₂SO₄(aq) $\to$ Na₂SO₄ (s)+ 2H₂O(l)

Regards