The exit gas from an alcohol fermenter consists of an air–co2 mixture containing 10 mol% co2 that is to be absorbed in a 5.0-n solution of triethanolamine, containing 0.04 mol co2 per mol of amine solution. assume that the column operates isothermally at 25∘c, the exit liquid contains 78.4% of the co2 in the feed gas to the absorber, and absorption is carried out in a six-theoretical-plate column. then use the equilibrium data below to calculate (a) exit-gas composition and (b) moles of amine solution required per mole of feed gas.