Isopropyl alcohol and water can be separated by extraction with ethylene tetrachloride (C₂Cl₄). 100 kg of a solution containing 30% (weight) Isopropyl alcohol and the rest water is mixed with the solvent ethylene tetrachloride. After extraction, the raffinate phase analyzed 71% water, 28.1% Isopropyl alcohol and 0.9% ethylene tetrachloride. The extract phase analyzed 94% ethylene tetrachloride, 5.2% Isopropyl alcohol and the rest water. Calculate the following:
The amount of solvent