Translate the following statements into chemical equations and then balance the equations:
(i) Phosphorus burns in oxygen to give phosphorus pentoxide.
(ii) Aluminium metal replaces iron from ferric oxide, Fe2O3, giving aluminium oxide and iron.
(iii) Carbon disulphide burns in air to give carbon dioxide and sulphur dioxide.
(iv) Barium chloride reacts with zinc sulphate to give zinc chloride and barium sulphate.
