tlc (1) - type had the lowest eluting power 3 Organic...

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E XPE RI M E N T : T H I N L A Y E R C H R O M A T O G R A P H Y Name _______________________________________ Instructor ____________________________________ Chem ____________ Section/Color ______________ Date ________________________________________ Laboratory Questions These questions are to be completed and turned in with the Laboratory Report. P OST-L A B Q U ES T I O NS 1. Several of the TLC plates shown below are incorrectly spotted. For each incorrectly spotted plate, indicate what is incorrect. liqu id leve l 2. What solvent type had the highest eluting power for the analgesics analyzed in this experiment? Which solvent
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Unformatted text preview: type had the lowest eluting power? 3. Organic compounds must exhibit what property in order to be visualized by the technique (UV light) used in this laboratory? 2 pt 2 pt 1 pt Not Even In Developing Solvent Too Closely Spaced In the words of Goldilocks, "Juussst Right" Ethyl Acetate Hexanes You obviously don't always want the solvent with the most eluting power, you want the one that gives the best separation of analytes. They must absorb the UV light, in order to prevent it from reaching the fluorescent substrate....
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This note was uploaded on 07/17/2011 for the course CHEM 237 taught by Professor Yu-chinli during the Spring '07 term at Texas A&M.

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