absorption process is carried out using a counter-current scrubber where SO2 is absorbed from a gaseous mixture stream into N(CH2CH2OH)3-H2O industrial solvent at 300K and 1atm . the SO2 initial concentration of 0.049 kmol/kmol is reduced to 1.5% of this value. the solubility of SO2 in the solvent follows the equilibrium relationship of Y=1.67X where Y is the kmol of insert gas and X is the kmol of SO2 per kmol of SO2 per kmol of solvent. the solvent enters the scrubber free of SO2 and leaves containing 0.019kmol of SO2 per kmol of solvent. the flow of intert gas is 0.010kmol/m^2 of the cross-section and the gas phase resistance controls the process.

if Kga=0.031 kmol/m^3s, determine the following

i) the flow of the solvent. ii)the height of the absorption column required for the separation. iii)determine the number of transfer units required