Question: Compare the required solvent volume, stage number, and purity obtained when penicillin F is extracted from water preferentially to penicillin K into amyl acetate at

Compare the required solvent volume, stage number, and purity obtained when penicillin F is extracted from water preferentially to penicillin K into amyl acetate at pH 3.1 relative to the values at pH 3.75. The respective pK_a values for penicillin F and K are 3.51 and 2.77, and the respective K^o_D values are 131 and 215.

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