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Unformatted text preview: and we were able to identify our unknown to be nicotinamide. The solubility information was helpful in narrowing down the possibilities of unknown. By knowing that the unknown was not soluble in hexane, we able to determine that unknown was polar. In addition, we were able to estimate the degree of polarity of the unknown after determining that the unknown was soluble at high temperatures in acetone. The activated charcoal was used to absorb the color impurities of the sugar. Therefore the resulting unknown is purer, with less color impurities. In addition, sometimes an unknown is in the presence of insoluble impurities, which make recrystallization ineffective. The process of removing activated charcoal will also remove these small particles that are suspended in the solution....
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This note was uploaded on 09/18/2011 for the course CHEM 3AL taught by Professor Li during the Spring '08 term at University of California, Berkeley.
- Spring '08