• A distillate of 45 wt% isopropyl alcohol, 50 wt% disopropyl ether, and 5 wt% water is obtained from an isopropyl alcohol finishing unit. The ether is to be recovered by liquid-liquid extraction with water, the solvent, entering the top and the feed entering the bottom, so as to produce an ether containing less than 2.5 wt% alcohol and an extracted alcohol of at least 20 wt%. The unit will operate at 25°C and 1 atm. a) What is the solvent flow rate required for treating 1000 kg/h of the feed. b) Find the stages required for the desired separation. c) Is it possible to obtain an extracted alcohol composition of 25 wt% or higher?