Benzil - Travis McMaine Aman Preet U5H Che 231-004 Benzil...

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Travis McMaine Aman Preet U5H Che 231-004 Benzil A. Add 400 mg of benzoin from the previous experiment to 1.4 mL of cupric acetate in pre-massed 5 mL conical vial with a spin vane and boiling stick. Set up a water condenser with a ring stand. Make sure to use copper wire to secure the tubing to the condenser. Heat the mixture on a hot plate with an aluminum block for one hour at 140-145° C. Note: the benzoin should dissolve in the cupric acetate solution after 5-10 of heating turning the solution green. If this color change does not occur by 20 min then add more (less than 500 μL) of cupric acetate solution as instructed by the TA. B. Allow the solution to cool to room temperature and add2 mL of chilled water. Place the solution in an ice bath for approximately 10-15 minutes. Use vacuum filtration to collect the yellow crystals. Rinse them twice with 2 mL of chilled water. Allow the product time to dry. This can be hastened by drying them between two filter papers. Collect the melting point of the product using a Mel-Temp apparatus.
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Benzil - Travis McMaine Aman Preet U5H Che 231-004 Benzil...

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