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- a pigment in the thin layer chromatography traveled beyond or farther than the solvent front. Therefore, the Rf value of that certain pigment is greater than 1. What does this mean to the experiment?When making the stocks and standards for the spectroscopy analysis, a student forgets to add ethanol to the salicylic acid. How will this technique error likely affect his results? Explain your answer.How can IR spectroscopy be used to determine when the attached reaction is complete?
- What is the structure and IUPAC name of atrazine? The herbicide simazine is more polar than atrazine. In reverse phase chromatography of a solution containing a mixture of the two substances, which would elute first? Explain why this is in terms of partition. The instrument used in this practical exercise has a UV spectrophotometer as a detector. Give two other types of chromatographic detectors that might be used.Give one advantage of the additional alternative Infrared (IR) Spectroscopy method over the current IR method of Amiloride Hydrochloride.Assign the peaks on the image. This is the NMR for the nitration of methyl benzoate. Also explain why and how you assigned those peaks
- what steps taken after excision of the bands before analyzing by mass spectrometry?The eluent is to be below the 1.5 cm line on the chromatographic paper. Describe the expected observation if the eluent were above the 1.5 cm line.Is the purpose of the reagent blank during spectroscopy to give the instrument time to “warm up” so that an accurate measurement can be made?
- Analyze the IR spectrum attached and state all takeaways from the dataIn reversed phase partition chromatography Select one: a. the least polar compound elutes first b. the smallest molecular weight compound elutes first c. the most polar compound elutes first d. the largest molecular weight compound elutes first e. the lowest boiling compound elutes first f. the highest boiling compound elutes firstIn an IR spectroscopy of a recrystallized salicylic acid Discuss other chemical analysis methods that could be used to further verify that the compound you obtained is what you desired.