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Given 60.00 g of the compound in 60.00 mL water. Calculate amount extracted using multiple (2 x 50.00 mL) extractions with ether.
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- The method of extraction for Roman chamomile is: Choose one answer. a. cold-press extraction b. steam distillation c. water distillation d. solvent extractionPropose a extraction flowchart capable of seperating this mixture into its pure formSome procedures include the addition of sodium carbonate before liquid-liquid extraction. What is the purpose of this step?
- If you are performing a solvent extraction using 1M HCl (Density slightly > 1.00 g/mL) and diethyl ether (density = .706 g/mL) which layer is the aqueous layer? which is the bottom and top layer?If 80% of a desired compound is extracted into the organic phase in each step (leaving 20% in the aqueous layer), how many extractions are necessary to ensure that at least 99% of the compound has been recovered in the organic phase? 1 extraction 2 extractions 3 extractions 4 extractionsWhich of these could not be used in an extraction with water? Explain why you chose these solutions:Acetone, Diethylether, dichloromethane, ethyl aceate, chloroform, ethanol, and hexane
- During melting point determination, what does melting point range means? How will you know if the sample is pure or not?Diethyl ether and methylene chloride are generally not suitable for use in recrystallization, but are frequently used as extraction solvents. Explainyou weigh your crude sample (1.538 g) and recrystallize with hot isopropanol. How do you know how much isopropanol to add?
- Is recrystallization a good method for purifying any product?You have 100 mL of solvent available to do an extraction. Which will give a better separation?a. 1 extraction with 100 mLb. 2 extractions with 50 mLc. 5 extractions with 20 mLd. 3 extractions with 25 mLWhen you prepare your sample to run through the column chromatography , what is the first proper action you should do if you notice that your sample did not fully dissolve? A)Add a small amount of the sample B)Boil the sample mixture C)Use the rotovap D)Use a different solvent