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A weak base B (Kb = 1.0 x 10-5 ) is to be extracted from 100.0...

A weak base B (Kb = 1.0 x 10-5 ) is to be extracted from 100.0 mL of aqueous solution (adjusted to pH 8.0) into benzene. The partition coefficient for the extraction is 50.0.

Calculate the number of extractions required to extract 99% of the base from the aqueous phase at pH 8.0 using 25.0 mL portions of benzene for each extraction.

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