Recrystallization Post Lab

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Recrystallization Post Lab Christina Wolverton 10 September 2016 TA: Alex Results: Percent Yield = [(Recovery of purified product Q4769J) / (Initial amount of Q4769J)] X 100 [(0.165g) / (1.003)] X 100 = 16.45% The total amount of solvent used to dissolve the unknown sample was approximately 15mL. The melting point of the purified compound was from 121.8°C to 126.6°C. The first potential identity was Benzoic Acid, and its mixed melting point range was 121.1°C to 126.0°C. The second potential identity was Benzamide, and its mixed melting point range was 110.1°C. Discussion/Conclusion: The initial mixture appeared to consist of finely ground sand and a few white clumps of the compound. The purified sample was white and puffy-like, meaning it was dry. Some issues included the compound being slightly difficult to melt at first. Because
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  • Fall '07
  • Hubbard
  • Melting

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