From the balanced molecular equations, write the complete ionic and net ionic equations for the following:
(a) K₂C₂O₄ (aq) + Ba(OH)₂ (aq) ⟶ 2KOH(aq) + BaC₂O₄ (s)
(b) Pb(NO₃)₂ (aq) + H₂SO₄ (aq) ⟶ PbSO₄ (s) + 2HNO₃ (aq)
(c) CaCO₃ (s) + H₂SO₄ (aq) ⟶ CaSO₄ (s) + CO₂ (g) + H₂O(l)