You will be completing the extraction of caffeine with dichloromethane and water. In which solvent will the caffeine be found after the layers are mixed, and is this the top or bottom layer? A. Dichloromethane - top layer B. Dichloromethane - bottom layer C. Water - top layer D. Water - bottom layer

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A: This speration can be done by using sperating funnel and second method can be used is dstillation .

Q: Which fraction or extract is/ are positive for Guignard test? A. Aqueous fraction B. Hexane C. Ethyl…

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A: Water is not a good recrystallization solvent for sodium benzoate.

Q: best method of preration of Alcohol

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Q: Select all of the following that would be soluble in the water layer of an extraction that utilizes…

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Q: Is recrystallization a good method for purifying any product?

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Q: When isolating the solid after recrystallization using vacuum filtration what solvent should you use…

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Q: In the reaction of 10.00 mL of FeCl3(aq) and 12.4 g of K2C2O4(aq), you calculate that 9.58 g of…

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Q: Make a schematic diagram of the recrystallization procedure.

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Q: A proceduce calls for you to dissolve a compound in hot ethanol. What is the best method for heating…

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Q: 10. Describe how you can decide whether your recrystallized trphenylmethanol is pure or not ?

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Q: Why do we know the aqueous layer is the upper layer during the wash steps?

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Q: What is the major difference in set up between a simple distillation and a fractional distillation?…

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Q: write an equation for this lab and explain the observations that would occur: measure out 10 mL…

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Q: When isolating a solid compound after recrystallization, which is the appropriate technique to use,…

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Q: 4. What is the purpose of the methanol and acetone washes?

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Q: What are pipeline slurry systems? How do they function?

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Q: I. Define the following terms: g. Cream h. Lotion i. Cleansing and cold cream

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Q: What are the criteria for a good recrystallization solvent?

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Q: Of the following, which compound has the highest boiling point? a. Hexanal O b. Hexanone O c.…

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Q: You have completed your recrystallization process, but you did not get any crystals back after you…

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Q: In general describe how a mixed solvent recrystalization works.

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Q: 1. Flame Test Metal Barium chloride Calcium chloride Copper (II) sulfate Potassium chloride Sodium…

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Q: Describe how an emulsion could break down in case it forms in an acid-base extraction or in general.

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