Write balanced equations for the following:
(a) Hydrated Barium peroxide reacts with orthphosphoric acid.
(b) H2O2 is allowed to react with PbS (lead sulphide)
(a) 3BaO2.8H2O + 2H3PO4 → Ba3 (PO4)2 + 2H2O2 + 23H2O
(b) PbS + 4H2O2 →PbSO4 + 4H2O2
