Q: A thin-layer chromatography (TLC) experiment was run using three compounds: benzophenone,…
A: on doing A thin-layer chromatography (TLC) experiment was run using three compounds: benzophenone,…
Q: Why is addition of phenol to the reagent 3, 5-dinitrosalicylic acid recommended in the experimental…
A: The simple reason is phenol even a small amount will intensify the color . Adding it will also…
Q: what would be the implications if the volume reduction is skipped in the recrystallization
A: Recrystallization is a purification technique often employed in the labs. it is based on the…
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Q: Why should deionized water to be used throughout the analysis
A: In any type of analytical method, most of the time we use deionised water because-
Q: Why should the solvent not be run off the top of the paper? . What color did you observe in the…
A: Q3) In paper chromatography, the solvent should not be run off the top of the paper.
Q: 2. Among the three solvents used in the separation of pigments in spinach, which produced the most…
A: Separation of pigments in spinach, by chromatographic method.
Q: Why do you think there is a need to soak the crucible with 10% nitric acid? Why do you think the…
A: An acid is a substance that can play a role in increasing the hydrogen ion (H+) concentration in an…
Q: In Thin Layer Chromatography，why does the least polar of the analytes （biphenyl）have a higher Rf…
A:
Q: solvent front origin
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Q: 3. Why was DMSO used as the solvent in the experiment?
A: Synthesis of nerolin is an example of Williamson ether synthesis. DMSO, HMPA and alcohols that…
Q: Which analyte gives a positive result for the Molisch Test?
A:
Q: Solvent A gives Rf values for the two unknown dyes of 0.28 and 0.67. Solvent B gives Rf values for…
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Q: Why are stock thiols stored in weakly acidic solutions? In contrast, why do we perform this…
A: Thiols are redox buffer and its half-life is only 9 hours. to prevent the decomposition of the…
Q: What is the purpose of the ammonium acetate in this experiment? How does it affect the ppt?
A: An ammonium salt obtained by reaction of ammonia with acetic acid. A deliquescent white crystalline…
Q: What are some of the analytes typically analyzed using reverse-phase ion-pairing chromatography
A: The detailed answer of the given question is as under: OLIGONUCLEOTIDES are short, single or double…
Q: if you prepare benzhydrol by the reduction of benzophenone with sodium borohydride, how could you…
A: Benzophenone is a ketone and is nonpolar. So benzophenone has high mobility on TLC plate and thus Rf…
Q: Which ONE of the following mobile phases would give the SHORTEST retention time of prednisolone…
A: To determine the solvent in which the prednisolone will give shortest retention time using a reverse…
Q: Why do the spinach's pigments become separated during the development of the chromatogram?
A: Chromatography is an important analytical method used to separate mixture of chemical substances…
Q: During the experiment, a student calculated the R¡value for glutamic acid of 0.29 and 0.45 for…
A: Chromatography is defined as the laboratory technique for the separation of components of a mixture…
Q: 14. If an ink is made by mixing dyes 1,2 and 3, which chromatogram will be produced from the ink?…
A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…
Q: What would be a suitable blank for an assay where the samples contain protein in a solution with dye…
A: A question based on absorption that is to be accomplished.
Q: Describe
A:
Q: Indicate two differences between the IR spectra of Lidocaine and 2,6-dimethylaniline
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Q: What is the confirmatory result of the lead acetate test?
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Q: 10)Examine each of the errors below, discuss how the error would affect the separation. Describe how…
A: Hello. Since the question contains more than three sub-parts, the first three sub-parts shall be…
Q: Whagt is the purpose of the following? Separate the active ingredients in an unknown over the…
A: Thin-layer chromatography is a technique for separation of compounds based upon the difference in…
Q: What is phenolphthalein and why is it required in this experiment?
A:
Q: what is the purpose of TLC Separation & Analysis of Analgesics?
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Q: Addition of Ether in the Experiment of Assay of Sodium Benzoate, why?
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Q: Why is sodium chloride added before extraction the aqueous layer with DCM? How does magnesium…
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Q: Which analyte gives a positive result in the Benedict's Test?
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Q: What is the concentration for vinegar for the 3 trials?
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Q: Based on the chromatogram, the Gingko capsule contains quercetin and kaempferol only, True or False?
A: A question based on analytical separations that is to be accomplished.
Q: A very dilute solution of CuSO4 is used in the Biuret test. Why?
A: First of all, let's understand about the biuret test. The biuret test is used for the detection of…
Q: How is "Characterization and spectroscopic techniques for analyzing" used in a melting point…
A: Melting point is the temperature when a substance starts melting. The melting point of a compound is…
Q: caffeine
A: The crude caffeine contains contaminates, usually other organo compounds that were part of the plant…
Q: What is the purpose of using bleach in the iodoform test? Please Explain.
A: In the Iodoform test is Sodium hypoiodite, NaOI is used that is similar to NaOCl.
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A: Given compounds are: Lycopene: It is the red color hydrocarbon found in tomatoes and in all red…
Q: Chromatography
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Q: 1.What is the advantage of using 12 in this experiment? 2. Why is the concentration of lodine much…
A: The iodination of acetone can be represented as:
Q: Consider the mordant dyes and alizarin red S results, specifically focusing on the use of copper…
A: The substance mordant dye can be described as the dyes that will be utilized for the dyeing of the…
Q: If two samples have identical Rf values, in a Paper Chromatography of Amino Acids lab procedure,…
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Q: what is the reaction of acetone in Sodium nitroprusside and in Iodoform tests?
A: Given: Reaction of acetone in Sodium nitroprusside and in Iodoform tests.
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- What is the confirmatory result of the lead acetate test?What is the purpose of using bleach in the iodoform test? Please Explain.. Design a flow chart for the separation of 3-chloro aniline (a base) and benzophenone (a neutral compound). You may use 5% HCl solution and 6M NaOH solution for your procedure.
