A 100 mol/s stream exiting a reactor contains 30 mol% SO2 and the balance nitrogen at a temperature of 80C and a pressure of 5 atm. This stream is sent to an isobaric absorber where it is contacted with a stream of pure solvent flowing at a rate of 1.28 x 105 mol/s to remove the majority of the SO2. The gas stream leaving the absorber contains 0.28 mol% SO2. The Henrys Law constant for SO2 in this particular solvent follows the equation: H = (8.1x10-5 )e0.068T where H has units of atm/mole fraction and T has units of K. You may assume that nitrogen is insoluble in the solvent and the solvent does not evaporate in the unit .

Calculate (i) the mole fraction of SO2 in the liquid solvent leaving the absorber and (ii) percent removal of SO2 from the stack gas.

Calculate the operating temperature (C) of the absorber