A gas mixture containing 15 mole% A and 85 mole % inert is fed to an absorption tower where it is contacted with liquid solvent B which absorbs A. The mole ratio of solvent to gas entering tower is 2:1. The gas leaving the absorber contains 2.5% A, 1.5% B and rest inert (on mole basis). Find

a. The recovery of solute A

b. The fraction of solvent B fed to column lost in gas leaving the tower.