(b) In Hittorf experiment an aqueous solution of XCI at 25 C containing 1.462 g in 100 g solution was electrolyzed between silver anode and silver-silver chloride cathode. During the electrolysis 0.3236 g of silver was deposited on the cathode of a silver coulometer series with the Hittorf cell. After 40 minutes of electrolysis, the anode solution contained 0.618 g of salt in 49.70 g solution. Calculate the transference number of X* ions. [Atomic mass X = 39, Ag = 108] (10 Marks]