Question

based on the calculations why is it better to extract using smaller amounts of solvent multiple times than it is with a larger amount one time?

vol. ether conc. insher 10.45 Wt. conc- er inter Vol water Use the equation above to calculate the weight and percent of Z recovered if 6.2 g of Z in 100 mL of water are extracted with 50 mL of ether. SHOW CALCULATIONS. [ HINT: If xwt. in ether, then (6.2-x)= wt. in water.] a. Kpso 2-x) 10.45 5,2 X1007 84 % t0o A -10.45 c.2-x 12.u5 x-4. Grams of Z:5.20 b. Suppose 6.2 g of Z in 100 mL of water are extracted with TWO consecutive 25 mL Percent of Z: portions of ether. Calculate the weight and percent of Z recovered at EACH extraction, and the total weight AND percent when both portions are combined. X25 6.2-4.5-1.1 10.45 10.45 1O0 4001xB5h I .7-X 1 4x-n. 77-10.4 X1,29 I X 1.79 -10.45 0.2-X o.25 4 -04.79-10.usK 73 90 Percent of Z1: 739 Total Grams of Z: | Grams of Z2: 2a Percent of Z):7 Total Percent of Z: 9ay Grams of Z1:Sa 4. Sat 1.29 =5.79 5.7, X1007, -92%e se.