Qn. 3 a) Aluminium is produced from bauxite by the electro-reduction of alumina. In the electrolytic bath, aluminium gets deposited at the cathode and oxygen gets liberated at the anode. The liberated oxygen attacks the graphite anode and forms carbon dioxide. (i) Write the balanced reactions involved in the electrolysis of alumina. (ii) If the electrolysis is carried out with a potential difference of 4.5V between the two electrodes and the current passing through the cell is 180kA with the current efficiency of 95%. Calculate the amount of energy required for production of 100kg of aluminium. (iii) Calculate the rate of production of carbon dioxide per hour