Unformatted text preview: Heat this flask on the hot plate with a stem less funnel and wet, fluted filter paper until boiling then for 2-3 additional minutes. Pour 3-4 mL’s of boiling water through the fluted paper, then filter your acetanilide mixture through this warm funnel (3-4 mL’s at a time). NOTE: Don’t rush it at this point. The key is to have the flask, filter, and paper hot. If too much mixture is filtered at a time the acetanilide will crystallize on the filter paper and more solvent will be required to re-dissolve which will decrease your final yield. Allow the flask to cool slowly to room temp then to ice temp to crystallize. Charcoal should not be present in your filtrate. If so, repeat procedure. Vacuum filter the solid crystals through a Buchner funnel and rinse with 2-3 mL’s ice-cold water. Allow the crystals to dry while in the Buchner funnel until the next lab period. Follow remaining procedures in textbook....
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- Summer '11
- Biochemistry, Crystal, Laboratory glassware, Erlenmeyer flask, Crystallization