A feed of 13,500 kg/h is 8 wt% acetic acid (B) in water (A). Removal of acetic acid is to be by liquid–liquid extraction at 25C. The raffinate is to contain 1 wt% acetic acid. The following four solvents, with accompanying distribution (partition) coefficients in mass-fraction units, are candidates. Water and each solvent (C) can be considered immiscible. For each solvent, estimate the kg/hr required if one equilibrium stage is used.

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Solvent Methyl acetate Isopropyl ether Heptadecanol Chloroform KD 1.273 0.429 0.312 0.178