# Vacuum filtration was used to separate and dry the

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was obtained from Peyton Bunn and taylor. Vacuum filtration was used to separate and dry the solid. Once the solid was dried, it was then weighed and a percent yield was calculated. After the solid was weighed, a small amount was put through a Mel temp to figure out the melting point of the solid. Approximately 0.013 g of 12-2-12 were weighed and added to 100 mL hH2O. 0.307 g of 12-2-12 was obtained from _______ and added to 100 mL of dH2O. 10 mL of each solution were then transferred to test tubes and 15 drops of DCM were added to the solutions. A UV light was placed by each test tube to see the color and colloidal properties of the substances. Sample C of the experiment was not done. Data: 1. Calculate the percent yield of 12-2-12. 2. Describe the difference in the appearance of the fluorescence of DCM in dH 2 O, methanol, dichloromethane and toluene (part IIa). a. dH2O: clear, light orange, no fluorescence b. meth: clear, bright orange, fluorescence c. di: clear, orange, fluorescence d. T: opaque, yellow, fluorescence 3. Calculate the concentration of 12-2-12 in Sample A and Sample B (part IIb). Describe the difference in the appearance of the DCM fluorescence in these two samples. Compare these to the appearance of the solutions in part IIa. Suggest an explanation for the difference in appearance of these two samples. (Hint-DCM, is relatively hydrophobic. Think about how the immediate environment of DCM changes above the CMC.) a. No fluoresce, clear and orange b. Fluoresce and orange 4. Calculate the concentration of 12-2-12 in Sample C (Part IIc). Describe the physical

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• Fall '19
• Solvent, Ultraviolet, Peyton Bunn, Colloidal Study of Gemini Surfactants

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