Simple extractions are particularly useful for separations where only one component has a favorable partition coefficient. True or False? True
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- If the solubility of a drug is 3.8g/L and in chloroform 226g/L calculate its partition coefficient to 1 decimal placeWhat do you mean by the term equilibrium partition coefficient?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?
- Multiple choice questions. Pick the right answers Benzene is one of the Toxic Air Pollutants (TAPS) found in car exhaust fumes When a 50.00 ml. aqueous sample containing a 0.05000 M benzene (molecular weight = 78.11g/mol) is extracted twice with 10 00 ml. portions of chloroform, it is found that 1.50x 10 moles of the original compound has been extracted into the chloroform i) Calculate the value of the partition coefficient for the extraction of benzene in water using chloroform A 2.75 B 2.91 C 7.51 D 2.81 ii) determine the extraction efficiency of a single extraction A. 0.575 B. 0.400 C. 0.368 D. 0.600 iii) determine the total volume of the chloroform which will be needed to extract 99% of the benzene from the aqueous phase A 50.72 mL B 150 00 mL C 110 00 mL D 46.28 mL.What is the difference between partition coefficient and distribution coefficient.Acetone has a partition coefficient of 13 while DCM has a partition coefficient of 4.6. Why is DCM used for the extraction of caffeine from Black teabags?
- The partition coefficient(k)of a substance between petroleum ether and water is 6. A substance of mass 12 g is dissolved in 50 mL of water. Calculate the total mass of sample that can be extracted into 40 mL of ether if the ether is used in two 20 mL portions.what are the multiplicities and their chemical shiftsNaphthalene has a log Kow of 3.33. Estimate its soil-water partition coefficient normalized to organic carbon and the 95 percent confidence interval of your estimate.
- 2) Assume you are decaffeinating your coffee by extracting the caffeine out with dichloromethane. Your particular brand of coffee contains 100 mg of caffeine in a 200 mL cup of water. The partition coefficient of caffeine in dichloromethane/water is 8.0 (it is more soluble in the dichloromethane).Answer the following questions about how much caffeine would still be in the 200 mL of water based on two different approaches. You should solve this algebraically. If you use an equation found on the internet, you will need to show how it was derived to receive credit.a) How much caffeine would remain in the water after extracting once with 200 mL of dichloromethane? Show your work.b) How much caffeine would remain in the water after extracting twice, each time with 100 mL of dichloromethane? Show your work.Need HELP ASAP Calculate the partition coefficient Kd of X in hexane. Answer in 4 significant figures. Calculate the partition coefficient Kd of X in chloroform. Answer in 4 significant figures.Solute S has a partition coefficient of 4.0 between water (phase 1)and chloroform (phase 2) in K = AS2/AS1= [S]2/[S]1(a) Calculate the concentration of S in chloroform if [S(aq)] is 0.020 M.(b) If the volume of water is 80.0 mL and the volume of chloroformis 10.0 mL, find the quotient (mol S in chloroform)/(mol S in water).