An aqueous acetic acid solution containing 6.0 mol/L of acid is extracted with chloroform at 25
Question:
An aqueous acetic acid solution containing 6.0 mol/L of acid is extracted with chloroform at 25οC to recover the acid (B) from chloroform- insoluble impurities in the water. The water (A) and chloroform (C) are immiscible. If 10 L of solution are to be extracted at 25οC, calculate the % extraction of acid obtained with 10 L of chloroform under the following conditions:
(a) The entire quantity of solvent in a single batch extraction;
(b) Three batch extractions with one-third of the solvent in each batch;
(c) Three batch extractions with 5 L of solvent in the first, 3 L in the second, and 2 L in the third batch.
Assume the distribution coefficient for the acid = K''DB = (cB)C / (cB)A = 2:8, where (cB)C = concentration of acid in chloroform and (cB)A = concentration of acid in water, both in mol/L.
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Separation Process Principles Chemical And Biochemical Principles
ISBN: 9780470481837
3rd Edition
Authors: By J. D. Seader, Ernest J. Henley, D. Keith Roper