6. ( If the solubility of solute Z is 1.0 g/60 mL in diethyl ether and is 1.0 g/1110 mL in water. a) Determine the partition coefficient for the solute Z in these two solvents. b) If 60 mg of the solute Z were dissolved in 100 mL of water, how much ether would be required to extract 90% of solute Z in a single extraction. c) What percent of the A would be extracted from the aqueous solution in (b) by two 50 mL portions of ether?
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- Solute A has a partition coefficient of 3 between toluene and water, with three times as much in the toluene phase. Suppose that 100 mL of a 0.010M aqueous solution of A is extracted with toluene. What fraction of A remains in the aqueous phase, if five extraction with 100 mL is performed?The partition coefficient K for a compound between dichloromethane and water is determined to be 56 : 1 (K=56). If 10.0 mg of the compound is dissolved in 50.0 mL of water and this solution extracted with 25.0 mL of dichloromethane, how many mg of the compound will remain in the water layer following the extraction procedure? Show you calculationsIf the solubility of a drug is 3.8g/L and in chloroform 226g/L calculate its partition coefficient to 1 decimal place
- If the solubility of a drug is 3.8 g/L and in chloroform 224.9 g/L calculate its partition coefficient.The partition coefficient for caffeine between dichloromethane and water is 4.6. Assume that a 100 mL tea solution (in water) contained 100 mg of caffeine. What is the theoretical yield of caffeine in the methylene chloride if you extract with one 100 mL portion of methylene chloride?Liquid-liquid extraction is a means of separating the components of a mixture which relies on the differential partitioning of the components in two immiscible liquids. Define the term immiscible. O 1) Two solvents that do not mix together O 2) Two solvents that do mix together
- The partition coefficient of caffeine between dichloromethane and water is 4.6. Given a 50 mL saturated solution of caffeine, determine the percent recovery of caffeine in a single extraction using 20 mL of DCM; and determine the percent recovery of caffeine when the extraction is done twice using two portions of 10 mL of DCM.You add 1 mL of sample and collect 1 mL fractions from a column with a volume of 20 mL where the beads take up 60% of the column and the protein of interest has a partition coefficient of 0.4. What fraction do you want to keep?(4.113+1 5. A monoprotic acid (HA) with K, of 8.76 x 10 has a partition coefficient of 3.9 (favoring octanol) when distributed between water and octanol, An aqueous solution (100.0 ml, pH 4.50) initially containing a 0.200 M formal concentration of HA is extracted once using 30.0 mL of octanol. a) What is the extraction efficiency? b) Calculate the formal concentration of the acid in both the water phase and the octanol phase after performing the extraction. Fwater = Foctanol = c) Would the extraction efficiency increase, decrease, or not change if the pH of the aqueous phase is adjusted to 7.00 prior to performing the extraction? no change Circle one: increase decrease Briefly explain:
- As part of a lab exercise, your group was assigned an unknown compound X for which you had to determine its partition coefficient between an organic solvent and water. You dissolve and shake 4 grams of X in a mixture of 130 mL benzene and 100 mL of water. At the end, your group discovered that the benzene layer contained 0.5 g of X. Use the information provided to calculate for the partition coefficient. What can you say about the chemical nature of compound X?2. Solute A has a partition coefficient of 4 between diethyl ether and water. If 100 mL of 0.1 M aqueous solution of A is extracted twice with 100 mL of diethyl ether, what is the resulting concentration of A in aqueous layer? (Please show the solution of the correct answer) A. 2.0x10^-3 M B. 4.0x10^-3 M C. 2.0x10^-2 M D. 2.0x10^-2 MA solution of 3g organic compound X in 200ml of water was extracted with 200 ml of ethyl ether. At equilibrium the concentration of Xin the two phases was ; 2.6g/100ml of ethyl ether ; 0.8g/100 ml of water. Calculate the partition coefficient, Kd, for compound X in the system. Show your calculations and What percentage of the original sample of X was extracted? Show your calculations.