Recrystallization - Sophie Scheidlinger Recrystallization...

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Sophie Scheidlinger Recrystallization March 19, 2008 Purpose: To be able to purify a compound through recrystallization and then identify it through its known properties Discussion: Acetone was chosen as the solvent because it did not completely dissolve the unknown compound at room temperature but dissolved the unknown at high temperatures. Once the mixture of unknown and acetone was cooled crystals reformed as well illustrating that the solvent can be used for recrystallization. No other solvent choices did this. In order to find the identity of the unknown two properties needed to be known. Those were solubility in water and melting point. From the first test it was found that the unknown was soluble in water. After recrystallization the melting point of the pure compound was found. The melting point was found to be 129.1-130.3 degrees Celsius. The only compound from the list that matched these properties was Nicotinamide. The solubility information was very helpful in identifying the unknown because another
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Recrystallization - Sophie Scheidlinger Recrystallization...

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