Question

A chemist wants to extract a solute from 100 mL of water using only 300 mL of ether. The partition coefficient between ether and water is 1.79. Calculate q, the fraction of solute that would remain in the water under each of the extraction conditions. The chemist performs a single extraction with 300 mL of ether. q= The chemist performs three extractions with 100 mL of ether. 9 = The chemist performs six extractions with 50 mL of ether. q=

Answer 1

The fonmula uad 'u: initial Solvent 1 = Chener utex 2 enctracting solven Chene, eihe) +V K. V weight oSolule where in w-Tolol weight ciraitions solule ectrasms no. Volume Velume 2 Fracion 일 Solule in V, loo mL - 300 mL 2 M=1 loo m L |4 (300) +toom O. 15 toomL 100 mL 2n 3 3 OO4 00 mi a(100mL) o0 m

V,= loo mL. 50mL V2 \00 mL +100 mL 0.0216