Question 5 [15 Marks] *. Sulphur dioxide is recovered from a smelter gas containing 3.5 per cent by volume of SOA, by schabley with water in a countercurrent absoption rower. The gas is fed into the bottom of the sower, and in the 6 gas from the top, the SO2 exerss a purtial pressure of 1.14kN/m2. The water fed to the wo of the weser free from SO2, and the exit liquor from the base contains 0.0001145kmolSO2/kmol water The procete takes place at 293K, at which the vapour pressure of water is 2.3kN/m2. The ware flow rate is 0.43 kmol/k. If the area of the tower is 1.85m2 and the overall coefficient of absorption for these conditions is 0.19kmolSO/2sm3 (kmol of SO2/kmolH2O ), what is the height of the column required? Table 2 pretents [12 Marks] the equilibrium data for SO2 and water at 293K. Table 2: Equilibrium data for SO2 and warer at 293K