Sulphur dioxide is to be removed from air by contacting the gas with water in a column packed with 34-in ceramic Berl saddles. The entering gas contains 10 mol% SO2. Water enters at a rate of 2.03 x 10 kgmol/h and the gas enters at a rate of 2.26 x 10 kgmol per kgmol of water. (a) determine the diameter of the tower at 70% flooding, and (b) calculate the pressure drop through the column if the packing is dumped into the column and the height is 100 ft. Operating conditions are 30C and 2 atm