(a) Give equations to show the effect of temperature on the reaction between Cl₂ and aqueous NaOH.

(b) In neutral solution 1 mol [IO₄]⁻ reacts with excess I⁻ to produce 1 mol I₂. On acidification of the resulting solution, a further 3 mol I₂ is liberated. Derive equations for the reactions which occur under these conditions.

(c) In strongly alkaline solution containing an excess of barium ions, a solution containing 0.01587 g of I⁻ was treated with 0.1M [MnO₄]⁻ until a pink colour persisted in the solution; 10.0cm³ was required. Under these conditions, [MnO₄]⁻ was converted into the sparingly soluble BaMnO₄. What is the product of the oxidation of iodide?