Why is distillation of cyclohexanol using acid catalyst phosphoric acid a better technique to purofy rather than extraction, recrystallization, chromatography, IR spectroscopy?
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Why is distillation of cyclohexanol using acid catalyst phosphoric acid a better technique to purofy rather than extraction, recrystallization, chromatography, IR spectroscopy?
Step by step
Solved in 2 steps
- Use 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.The compounds biphenyl and naphthalene are presented in a mixture. Can hexane be used as a solvent to separate the compounds by column chromatography with silica gel as the stationary phase? Why or why not.A thin-layer chromatography (TLC) experiment was run using three compounds: benzophenone, benzhydrol, and biphenyl. The three solvents that were used with these compounds were hexane, ethyl acetate, and dichloromethane. Which solvent would be the best for separating these compounds and why?
- Column chromatography is also very useful for separating mixtures of organic compounds that are not coloured. Briefly explain how you could use column chromatography for the separation of a colourless mixture, and how you could identify your separated compounds.Explain how TLC and column chromatography can be used together to ensure the perfect separation of two organic compoundsWhat kind of sample cleanup does solid-phase extraction accomplish in the analysis of caffeine and theobromine in chocolate?
- Which of the following is not a method for measuring reaction rates? A) total pressure B) thin layer chromatography C) isometric barometry D) spectrophotometry E) gas chromatographyWould you expect an alcohol or an ether to have a higher Rf value on silica gel thin layer chromatography? Why?Does the presence of a benzene ring or carboxylic acid functional group in a substance affect the retention factor (Rf) when doing TLC on silica gel ?
- what is the purpose of TLC Separation & Analysis of Analgesics?Differentiate normal phase chromatography from reverse phase chromatography. From which of the two in TLC and paper chromatography is normal phase chromatography and reverse phase chromatography? How do you say so?what are key reactions involved in seperation of liquid mixtures by simple and fractional distillation and gas chromatography? chemicals used: 10ml 1:1 mixture of ethyl and butyl acetate techniques: simple and fractional distillation, gas chromatography. target molecules: Ethyl acetate C4H8O2 Butyl acetate C6H12O2