An aqueous acetic acid solution containing 6.0 mol/L of acid is extracted with chloroform at 25^οC 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 25^οC, 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 = (c_B)_C / (c_B)_A = 2:8, where (c_B)_C = concentration of acid in chloroform and (c_B)_A = concentration of acid in water, both in mol/L.