A tray tower is to be designed to absorb SO2 from an air stream by using water at 303 K and 1.5atm. The flow rate of the total gas mixture is 10kgmol/h.m2. It contains 18 mol%SO2. The entering liquid is recycled water contains 0.02mol%SO2. It is desired to remove 85% of the SO2 from the gas mixture. 1. Determine the minimum solvent required (Lmin). 2. Using 1.25 times the minimum liquid flow rate, determine the number of trays needed using graphical method. 3. What is the composition of liquid and gas streams entering Stage 2 ? 4. How much SO2 is removed in Stage 2 ? A.3-19 Equilibrium Data for SO2Water1 System Source: T. K. Sherwood, Ind. Eng. Chem, 17, 745 (1925)