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In most distillations, the total volume of liquid obtained (distillate + residue) is possible sources of loss in this procedure?
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- In most distillations, the total volume of liquid obtained (distillate + residue) is not equal to the volume that was introduced into the flask. What are the possible sources of loss in this procedure?Underline the organic solvent(s) given that would work for the extraction:dichloromethane-water, acetone-water, benzene-water.Concisely explain why the solvent(s) not underlined do(es) not work.Anna has a solid sample and did use an aqueous solvent to dissolve it. She observed that some of her solid-sample was remained undissolved. She then filters her solution to separate the liquid from the undissolved solid. She disregards the solid so that it won’t interfere the reactions that may occur in the solution. Out of that solution, five replicates were obtained and she took the analytical procedure at the same time and in the same way. In Anna’s procedure, what was her source of error? Select one: a. None. She did it well. b. Applying analytical procedure at the same time and in the same way. c. Using an aqueous solvent to dissolve her solid-sample d. Filtering her solution e. Having five replicates instead of three
- Answer the questions below. a) 500 ml. Acetic acid in 200 mL acetic acid-water mixture containing 30% acetic acid by volume with pure isopropyl ether will be separated by LIQUID-LIQUID extraction. Assuming the dispersion coefficient of acetic acid in isopropyl ether+water carjumine is 2, calculate the amount of acetic acid that passes into the organic phase and the extraction yield. b) What are the desired properties of the solvents used in liquid-liquid extraction processes?In a liquid – liquid extraction, what is preferable? Three extractions with a small volume or one extraction with a large volume. Explain briefly.A three-component mixture containing compounds A, B, and C is separated by simple distillation. A fraction from that distillation is collected and analyzed by gas chromatography. The resulting chromatogram is overlaid on a ruler in the figure shown below. Using this figure and the data contained therein, determine the percentage composition of each component in this fraction by the triangulation method (i.e. determine the percentages of A, B, and C in this fraction). Be sure to show the setup for your calculations. 15 10 AAA 5. B 10 15 20 25 30 35 (both axes are in mm)
- Why is distillation of cyclohexanol using acid catalyst phosphoric acid a better technique to purofy rather than extraction, recrystallization, chromatography, IR spectroscopy?4.Discussed the Purposed of the Golden rules in the practice of Forensic Chrmistry.What roles do solvent, density and polarity play in liquid/liquid extraction
- i need help determining amount recovered in an extraction. i started with a .51g mix of naphlathene/benzoic acid. then, i ended up with the organic in the flask weighing 56g, with the initial weight of the flask without product being 46g. how do i determine amount recovered AND the % recovery?Based on the resulting chromatograms after visualization with iodine vapor, which between the solvent systems WHITE and MIX resulted in a more effective separation of the pigments of the indigo extract? Explain your answer in terms of the solvent that did not effectively separate the components of the root extract.a) Discuss the effect of solvent polarity on Rf-values. b)Explain how the Rf (Retention Factor)-values can be in agreement or disagreement with the “like dissolves like” principle?