Convey the following information in the form of balanced chemical equations (i) An aqueous of ferrous sulphate reacts with an aqueous solution of sodium hydroxide to form precipitate of ferrous hydroxide and sodium sulphate remains in solution. (ii) Potassium metal reacts with water to give potassium hydroxide solution and hydrogen gas is evolved in the reaction. (iii) Solid potassium chlorate upon heating forms potassium chloride and liberates oxygen gas. (iv) An aqueous solution of aluminium chloride reacts with an aqueous solution of ammonium hydroxide solution to form aluminium hydroxide and ammonium chloride.