8. If the TCE feed flow rate was 320 ml/min and the outlet mole fraction in the raffinate phase was 0.0005, and the pure solvent flow rate was 300 ml/min and the mole fraction of propionic acid was 0.013. then the rate of acid transfer is (circle the correct/most correct answer): a) 3.9 ml/min b) 4.16 ml/min c) 1.6 ml/min d) 1.5 ml/min 6) None of the above 8. If the TCE feed flow rate was 320 ml/min and the outlet mole fraction in the raffinate phase was 0.0005, and the pure solvent flow rate was 300 ml/min and the mole fraction of propionic acid was 0.013. then the rate of acid transfer is (circle the correct/most correct answer): a) 3.9 ml/min b) 4.16 ml/min c) 1.6 ml/min d) 1.5 ml/min 6) None of the above