12.5-2. Single-Stage Extraction. A single-stage extraction is performed in which 400kg of a solution containing 35wt% acetic acid in water is contacted with 400kg of pure isopropyl ether. Calculate the amounts and compositions of the extract and raffinate layers. Solve for the amounts both algebraically and by the lever-arm rule. What percent of the acetic acid is removed? Use equilibrium data from Appendix A.3. Ans.L1=358kg,xB1=0.715,xC1=0.03,V1=4.42kg,yA1=0.11,yC1=0.86,34.7%remuved