2. 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 ( 3 marks) a. The recovery of solute A b. The fraction of solvent B fed to column lost in gas leaving the tover. All questions must be answered in details and all calculation steps must be shown: 1- In the preparation of cooking liquor for a sulphite pulp mill, an absorption tower is used for absorbing SO2 in a week liquor. The week liquor enters the tower at a rate of 20L/s from top with SO2 concentration of 0.5% by weight and leaves from bottom with SO2 concentration of 1% by weight. The gas stream entering the bottom of the tower (Flowing in counter current fashion with respect to week liquor) contains 17% by volume SO2. When the gas leaves the tower from top, 75% of SO2 gets absorbed. The pressure in the tower becomes 151.325KPa and operates isothermally at 308K(35C). Assuming that the liquor has a specific gravity of 1.0. Calculate ( 3 marks) Data: R=8.31451m3.KPa/(kmol.K) a. Molar flow rate of entering gas. b. Volumetric flow rate of entering gas