Question

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.

Answer 1

(a) Sulphuric acid(aq) + Zinc(s) ------> Zinc  sulphate(aq) + Hydrogen(g)
H₂SO₄(aq) + Zn(s)  -----> ZnSO₄(aq) + H₂(g)
(b) Hydrochloric acid(aq) + Magnesium(s) -----> Magnesiurn chloride(aq) + Hydrogen(g)
  2HCl(aq) + Mg(s )   -----> MgCI₂(ag) + Hr(g)
(c) Sulphuric acid(aq) + Aluminium(s) ----> Aluminium sulphate(aq) + Hydrogen(g)
  3H₂SO₄(aq) + 2Al(s) -----> AI₂(SO₄)₃(aq) + 3H₂(g)
(d) Hydrochloric acid(aq) + Iron(s) ----> lron chloride(aq) + Hydrogen (g)
  2HCl(aq) + Fe(s) -----> FeCl₂(aq) + H₂(g)