Question

Question 6 3 pts A student is trying to extract a very nonpolar molecule from a rare sea sponge (it has potential anticancer activity). If they start with a crude 15.4 mL methanol extract (containing 54.5 mg of the potential drug) and try to separate the drug with 2 successive extractions using 22.7 mL hexane each time, what percent of original drug would be left behind in the methanol solution at the end of their extraction? Type your numerical answer to 2 decimal places (ex N.NN) without units. Assume the drug has a methanol/hexane partition coefficient of 3.52.

Answer 1

vdne ethanol Cv) mars ot Orug in methand S4Smg Stet- partztson Coticient (Kp)= 3.S2 Fivt Catsacton with 22-7ml hexanu Concentoatrun n merhand Concentration in hexane S५.5-2)/i5-५ /22.1 l2.31.15 - 22. 7 * KD (545 22 1 3- S2 e Amount 4 Drug Lutt in methand Second 38:५ - extrautr wirh 22.1 hexane 3 S2-8.4-)/Isy /22-1 2-2.1 (38.५-५) 76.902 871-68 -33 Amount 4 Drug lup an muhand Drug lett behind in Methand 38.4 -11-33 27-07 mg