the black ink in tilt-tip peps substance. Spot a piece of filter paper heavily w
ID: 927068 • Letter: T
Question
the black ink in tilt-tip peps substance. Spot a piece of filter paper heavily with a black (such as a Flair pen). Make the spot quite dark to be sure that enlarge link has been transferred to the paper. Obtain a chromatogram, using, as the solvent a soli PaPer of isopropyl alcohol with 5 mL of water. Attach all the dry developed chromatograms to your What does the technique of chromatography allow us to do? What is the meaning and utility of an R_f value? What would you expect to influence an Rf value? What are the developing reactions that allow the identification of Ni^2+ and Cu^2+? What forces cause the eluting solution to move along the chromatographic support material? Why should the solvent front be marked immediately? If the solvent front is 76 mm and the ring front of an unknown is 48 mm, what is the Revalue? Would you expect changing the solvent to change the Revalue? Why? Suggest simple reasons why the Ni^2+ and Fe^3+ ions have different R_f values. Is it necessary that compounds be colored to be separated by chrome zoography? Why should the Petri dish (or beaker) be covered during the development of the chromatogram?Explanation / Answer
the black ink in tilt-tip peps substance. Spot a piece of filter paper heavily w
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