1. We want to remove acetic acid from water with 1-butanol, with LLE data given in the graph on the next page. The inlet water again contains 2.0wt% acetic acid with a total flowrate of 250kg/h. The inlet 1-butanol contains 0.05wt% acetic acid with a flowrate of 200kg/h. We again want the outlet water stream to have less than 0.05wt% acetic acid. Assume dilute streams with negligible flowrate changes. a. What is the minimum 1-butanol mass flowrate? b. How many stages are needed? c. What is the outlet weight percent of acetic acid in the 1-butanol stream? d. If we contact these two flowrates in a single stage instead of a multistage cascade, what will be the outlet weight percent of acetic acid in the 1-butanol and water streams? Acetic acid/water/1-butanol LLE at 26.7C x, weight fraction acetic acid in water