Solute Carrier (a) (b) (c) Acetone Toluene Ethyl alcohol Ethylene glycol п-Неptane Glycerine Table 8.4 Group Interactions for Solvent Selection Solvent Group Solute 1 4 8. Acid, aromatic OH (phenol) Paraffinic OH (alcohol), water, imide or 0. amide with active H Ketone, aromatic nitrate, tertiary amine, pyridine, sulfone, trialkyl phosphate, or phosphine oxide 4 Ester, aldehyde, carbonate, phosphate, nitrite or nitrate, amide without active H; intramolecular bonding, e.g., o-nitrophenol Ether, oxide, sulfide, sulfoxide, primary and secondary amine or imine Multihaloparaffin with active H Aromatic, halogenated aromatic, olefin 8. Paraffin Monohaloparaffin or olefin 0. (+) Plus sign means that compounds in the column group tend to raise acti vity 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. 6. | + + + + + + + • + + +

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