When naphthalene, butyric acid, and phenyl acetate are separated using dichloromethane as the developing solvent on a silica gel TLC plate, which compound would have the highest Rf value? Which would have the lowest?
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When naphthalene, butyric acid, and phenyl acetate are separated using dichloromethane as the developing solvent on a silica gel TLC plate, which compound would have the highest Rf value? Which would have the lowest?
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- A mixture composed of biphenyl, benzoic acid, and benzyl alcohol is spotted on a silica gel TLC plate and eluted with a 10:1 hexanes:ethyl acetate solvent mixture. In what order are the Rf values of the 3 compounds (lowest first)?Consider a sample that is a mixture composed of biphenyl, benzoic acid and benzyl alcohol. The sample is spotted on a silica gel TLC plate and developed in hexaneethyl acetate solvent mixture. Predict the relative Rf values for the three compoundsA mixture of biphenyl, benzyl alcohol, and benzoic acid is spotted on a silica gel TLC plate and developed using Ethyl Acetate with 0.5% acetic acid as the solvent. Predict the relative Rf (highest to lowest).
- A fresh TLC plate is spotted with compound A,B and C, but with methylene chloride as a solvent. How does the change in solvent system affect the Rf value of compound A?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 ?SEE PHOTO: Effectiveness of separation. Based on the TLC analysis, did the isolated benzoic acidappear pure relative to the starting mixture? Did the isolated naphthalene look pure?How could the purity of the isolated materials be improved?
- in what order (from lowest to highest Rf) would you expect to find compund A, B, and C on a silica gel TLC plate with dichloromethane? Draw flowchart for separation with org solvent: ether, methylene chloride, aq: HCl, NaOH, NaHCO3A thin-layer chromatography (TLC) experiement was run using three compunds: benzophenone, benzhydrol, and biphenyl. The three solvents that were used with the three compounds were hexane, ethyl acetate, and dichloromethane. Which solvent would be the best for separating these compounds and why?Thin Layer Chromatography why the non-polar compounds move up the plate most rapidly (higher Rf value), whereas polar substances travel up the TLC plate slowly or not at all (lower Rf value)? Please help me explain this question! Thank you so much!
- A thin layer chromatography experiment is planned to determine the Rf values of four compounds. List the following compounds in order of increasing Rf values from shortest to longest. (If B is shortest, then A, C, and D is longest, enter BACD )During a Thin layer chromatography (TLC) analysis of crystallized napthalene, What would be the effect of adding acetic acid to the mixture in regards to the separation/spot shape?How does increasing the polarity of the developing solvent affect the Rf of a compound on a silica gel TLC plate?