4.46. Liquid-liquid extraction of ethylene glycol from water by furfural. Forty-five kg of a solution of 30wt% ethylene glycol in water is to be extracted with furfural. Using Figures 4.14a and 4.14c, calculate the: (a) minimum kg of solvent; (b) maximum kg of solvent; (c) kg of solvent-free extract and raffinate for 45kg solvent, and the percentage glycol extracted; and (d) maximum purity of glycol in the extract and the maximum purity of water in the raffinate for one stage. Ethylene Glycol