Question

Sulfuric acid is added to copper (II) oxide to dissolve the copper (II) oxide back into solution by forming water and soluble copper (II) sulfate. Whats is the net ionic reaction?

Answer 1

Copper (II) oxide - insoluble solid - CuO (s)

Sulphuric acid - strong acid - H₂SO₄ (aq.)

Copper (II) sulphate - soluble - CuSO₄ (aq.)

Liquid water - H₂O (l)

Molecular equation:
CuO (s) + H₂SO₄ (aq.) CuSO₄ (aq.) + H₂O (l)

Ionic equation:

(Dissociate into respective ions,except solid and liquid state ones)

CuO (s) + 2H⁺ (aq) + SO₄^2-  (aq) Cu²⁺ (aq) + SO₄^2-  (aq) + H₂O (l)

Net ionic equation:

(Remove the similar ions on both sides in ionic equation,also called as spectator ions)

CuO(s) + 2H⁺ (aq.) Cu²⁺ (aq) + H₂O (l)