What spot on TLC would be higher for an eluent system of 1:1 acetone: hexane, when bupropion hydrochloride is spotted against m-chloropropiophenone?
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Greener synthesis of Bupropion Hydrochloride
What spot on TLC would be higher for an eluent system of 1:1 acetone: hexane, when
bupropion hydrochloride is spotted against m-chloropropiophenone?
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- Draw a GC chromatogram for a 50:50 and 25:75 mixtures of hexane (bp 68°C) and toluene (bp 111°C).N1. Which of the following molecule pair(s) could be potentially distinguished by TLC analysis?5. Properties and IMF: Chlorophyll a and Chlorophyll b are almost identical in structure, but they separated during TLC. Report the RFs you recorded for both molecules. What functional group(s) are different between them? Then explain these RF values by comparing the IMF present in each molecule to those present in the mobile or stationary phase and how this shaped their affinities for each phase. Use the terms RF, IMF, polar, nonpolar, affinity, mobile phase and stationary phase.
- Polarities of analyte functional group increase in the order of hydrocarbon < ethers < esters < ketones < aldehydes < amides < amines < alcohols Arrange the order of elution [from shortest to longest retention time] for the following six compounds from an HPLC C18 column. C2H5OH CH3COCH3 CH3COOH CH3COOC2H5 C2H50C2H5 (СН3)2NH O A. C2H5OH < CH3COOH < (CH3)2NH < CH3COCH3 < CH3COOC2H5In a chromatographic analysis of an unknown mixture, compound A has a retention time of 5.56 minutes and a baseline width of O.87, and compound B has a retention time of 6.32 minutes and a baseline width of 0.53 minutes. Are these peaks resolved, and what is the resolution between the two peaks? O Yes, 1.09 O Yes, 0.54 O No, 0.54 O No, 1.09 O There is not enough information given to determine the resolutionWhy are peak areas used instead of peak height in Reverse Phase HPLC of Caffeine and Benzoic Acid?What is the purpose of chemically staining a TLC plate using iodine vapor? To increase the Rf values of all compounds on the plate To decrease the Rf values of all compounds on the plate To visualize colorless compounds that react with iodine on the plate To spread out the Rf values of all compounds on the plate moreUse a suitable model to explain how separation and identification of a mixture of organic compounds can be achieved with a thin layer chromatographic (TLC) technique.Which response includes all of the following substances that have dHformation = 0, and no other substances? I. HCl(g) II. Na(s) III. HCl(aq) IV. F2(g)Suppose triphenylmethanol and biphenyl have R¢ values of 0.30 and0.60, respectively, in a certain TLC experiment. Sketch the final appearance of a TLC plate, roughly to scale, including the starting line and solvent front a. for a pure triphenylmethanol sample b. for a triphenylmethanol sample contaminated with biphenylWhy might it be very difficult to visualize the separation of cis- and trans-2-butene by TLC?2) Consider the following compounds. Which rankings list these compounds in terms of Rf from lowest to highest using a silica gel thin layer chromatography plate and 1:1 Ethyl Acetate:Hexanes as the developing solvent. (e. g. ASEE MORE QUESTIONSRecommended textbooks for youChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill EducationPrinciples of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage LearningOrganic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill EducationChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningElementary Principles of Chemical Processes, Bind…ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEYChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill EducationPrinciples of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage LearningOrganic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill EducationChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningElementary Principles of Chemical Processes, Bind…ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY