6) If you are given a mixture consisting of following 3 compoünds components by solvent extraction method ÇOOH NH2 (C) Benzene m14 Ouclonentadiene-1-carboxylic acid
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- 2c)Outline a method based on extraction techniques for the separation of a mixture of compound B from problem I., and compound A from problem II.A Student added 1.5 ml of 3 M Methyl Magnesium Bromide to a conical vial containing Benzophenone & diethyl ether, after 30 minutes he added dilute sulfuric acid and isolated the product. Identify the Major product. a) b) c) d)How do you construct a flow chart using extraction to separate a mixture of the 3 solids used below if dicholoromethane is the solvent and any other reagents can be used. The 3 solids are: pyrazole, p-chlorobenzoic acid, and benzophenone.
- Following is a 1H-NMR spectrum of2-butanol, Explain why the CH2 protons appear as a complex multiplet rather than as a simple quintet.Q1. Discuss the role of the following reagents in the extraction of caffeine. a. Vinegarb. Baking soda Q2. What are emulsions? Why do they form during extractions? How is their formation minimized? Q3. Why is it necessary to turn the separatory funnel upside down and to open thestopcock?Compare the 13C NMR spectra of isoborneol and camphor. Explain which peaks can be used to determine whether the oxidation was successful. Propose a mechanism for this oxidation. To simplify the structures, use benzyl alcohol to draw the mechanism instead of isoborneol. Include the formation of any byproduct(s) in the mechanism.
- What is the suitable solvent to recrystallize azobenzene, p-nitroaniline and benzoic acid?The pKas of chemicals HX and HY are 5 and 7 respectively. The pKa of carbonic acid H2CO3is 6. If you made up an ether solution of chemicals HX and HY in a separatory funnel, andthen added an aqueous solution of sodium bicarbonate NaHCO3 to that separatory funnel,would both HX and HY stay in the ether layer? Or would either or both of them transfer intothe aqueous layer? If one goes into the water layer, will it be in it’s neutral HX/HY form, or init’s deprotonated anionic form?draw a correct separation scheme to isolate 2 methylocta-4,6-dien-amine from the provided second molecule. Make sure to indicate the phase of each chemical in every step (s, l, g, aq) and write the separation technique used in each step (ie: vacuum filtration).
- After completing the synthesis and purification of 4-t-butylcyclohexene, a few drops of the product were mixed with 1 drop of NaOH and 3 drops of KMnO4, as shown in the image. Identify with the name and structure of the brown precipitate (sediment, sludge) shown in the imageo - Nitroaniline is more soluble in ethanol than p - nitroaniline. Propose a scheme by which a pure sample of o-nitroaniline might be obtained from this reaction9-Aminofluorene has applications in the structural analysis of proteins and carbohydrates. Write a stepwise procedure with equations to show how to separate a mixture of 9-aminofluorene and fluorene in diethyl ether solution.