Write word equations and then balanced equations for the reactions taking place when:
(a) dilute sulphuric acid reacts with zinc granules.
(b) dilute hydrochloric acid reacts with magnesium ribbon.
(c) dilute sulphuric acid reacts with aluminium powder.
(d) dilute hydrochloric acid reacts with iron filings.

(a) Sulphuric acid + Zinc → Zinc Sulphate solution + Hydrogen gas
dil. H₂SO₄(aq) + Zn(s) → ZnSO₄(aq) + H₂(g)


(b) Hydrochloric acid + Magnesium → Magnesium chloride solution + Hydrogen gas
dil. 2HCl(aq) + Mg(s) → MgCl₂(aq) + H₂(g)


(c) Sulphuric acid + Aluminium → Aluminium sulphate solution + Hydrogen gas
dil. 3H₂SO₄(aq) + 2Al(s) → Al₂(SO₄)₃(aq) + 3H₂(g)


(d) Hydrochloric acid + Iron → Iron(III) chloride solution + Hydrogen gas
dil. 6HCl(aq) + 2Fe(s) → 2FeCl₃(aq) + 3H₂(g)