Using Table 8.4, select possible liquid ”liquid extraction solvents for separating the following mixtures:

(a) Water”ethyl alcohol,

(b) Water”aniline, and

(c) Water”acetic acid. For each case, indicate clearly which of the two components should be the solute.

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Table 8.4 Solvent Solute 3 4 Group 6. Acid, aromatic OH (phenol) Paraffinic OH (alcohol), water, imide or amide with active H Ketone, aromatic nitrate, tertiary amine, pyridine, sulfone, trialkyl phosphate, or phosphine oxide Ester, aldehyde, carbonate, phosphate, nitrite or nitrate, amide without active H; intramolecular bonding, e.g., 3 4 o-nitrophenol Ether, oxide, sulfide, sulfoxide, primary and secondary amine or imine Multihaloparaffin with active H Aromatic, halogenated aromatic, olefin 6. Paraffin Monohaloparaffin or olefin (+) Plus sign means that compounds in the column group tend to raise activity coefficients of compounds in the row group. (-) Minus sign means a lowering of activity coefficients. (0) Zero means no effect. Choose a solvent that lowers the activity coefficient. Source: Cusack, R.W., P. Fremeaux, and D. Glate, Chem Eng., 98(2), 66–76 (1991).