Experiment_5_Report_Form

Experiment_5_Report_Form - Experiment 5: TLC Chem 6AL...

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Unformatted text preview: Experiment 5: TLC Chem 6AL M10 Name________________________________ TA & Section________________________________ Experiment 5 Report Form Photoisomerization and TLC Analysis of Unknowns Results: In the following TLC diagrams, draw in your results for the photo isomerization experiment: Draw in your results and annotate the Rf value for each spot 1 Week After Filtration Solvent System__________________________________ Mass of cis product______________________________ Percentage Conversion_____________ Which isomer of 1,2 ­dibenzoylethylene is more polar. Give a detailed answer considering the properties of the molecules and the TLC conditions. Experiment 5: TLC Chem 6AL M10 Name________________________________ TA & Section________________________________ What sources of errors can be used to explain the lack of the reaction going to completion and the yield of the cis isomer obtained? In the following TLC diagrams, draw in your results for the qualitative analysis: (copy and paste more plates if needed) Draw in the TLC plate(s) for the known to include Rf values: Draw in the TLC plates for the determination of the unknowns to include Rf values: Experiment 5: TLC Chem 6AL M10 Name________________________________ TA & Section________________________________ Unknown #_________ Solvent System__________________________________ Compounds in unknown sample____________________________________________________________ Rank the compounds in your unknown sample in order of polarity (least to greatest) Explain the solvent system you chose and how it affected more movement of some molecules compared to others: Let’s say that instead of ethyl acetate in your solvent system, acetone was used in its place. Explain what the TLC might look like. Consider two of the knowns: benzophenone and benzil. Which of the two compounds has the higher Rf value? Which of the two compounds is more polar? What are some possible explanations of the polarities of the two compounds? ...
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This note was uploaded on 08/14/2010 for the course BIO 2010 taught by Professor Le during the Summer '10 term at UCSB.

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