1. Why are the acidic extracts and the basic extracts cooled before neutralization during Acid/Base extraction experiment? 2. Why was the water used for washing the precipitates on the funnels specified to be cold during Acid/Base extraction experiment.
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Q: What is the reason behind the portion-by-portion evaporation of DCM in the extraction of eugenol?
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A: The role of derivatization in GC-MS is given below
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Q: Why does the eugenol move from the water layer to the dichloromethane layer during extraction?
A: In separation process, aqueous and organic layer gets separated.
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A: PTFE: Polytetrafluoroethylene is a material from which stopcock is made and fitted into the glass…
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A: Given information: Separating t-butyl chloride from the reaction mixture.
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1. Why are the acidic extracts and the basic extracts cooled before neutralization during Acid/Base extraction experiment?
2. Why was the water used for washing the precipitates on the funnels specified to be cold during Acid/Base extraction experiment.
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- Describe why the inside wall of the flask is rinsed with deionized water during accurate titration. Does this washing affect the molar quantity of acetic acid in the sample? Describe..?Why is the titration done with vigorous swirling?In the procedure of the separation of Phensuprin using Acid-Base extraction, the bicarbonate solution was acidified with HCL to precipitate out acetylsalicylic acid. Why was not the water removed by a rotovap instead?
- Purification of benzoic acid 1. What is the purpose of washing the crystal in the filter paper with water? 2. How recrystallization affects the theoretical yield of sample? Explain.Separating t-butyl chloride from the reaction mixture. What is the purpose of washing with the following? . a. With cold water b. With sodium bicarbonate solutionBased 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.
- 1. What was the purpose of the concentrated sulfuric acid in the first step in the synthesis of aspirin? 2. What was the purpose of performing titration analysis on the product aspirin synthesized? 3. If the synthesized aspirin was not dried before melting point determination, what would be its effect?Potassium dichromate was used in the chromic acid preparation. Would there be a difference if chromium trioxide was used? Explain your answer.1. Basically, when is glass stoppered buret used? ______________________________ ____________________________________________________________________ When is rubber stoppered buret used? ____________________________________ ________________________________________________________________________________________________________________________________________ When is a PTFE buret used? _________________________________________________________ _ _________________________________________________________________________________ 2. Describe the recommended method for the manipulation of a buret stopcock during titration. ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 3. Why is it necessary to completely fill the rubber tubing of the stopcock with the…
- Why does the eugenol move from the water layer to the dichloromethane layer during extraction?In this experiment, 1.0 mL of saturated sodium chloride is used to rinse the Hickman head after the initial distillation. Why is saturated sodium chloride, rather than pure water, used for this procedure and the subsequent washing of the organic layer?A crude nonacidic product mixture dissolved in diethyl ether contains acetic acid. Describe an extraction procedure that could be used to remove the acetic acid from the ether. Draw a flow diagram.