Lab 1 Recrystallization

Lab 1 Recrystallization - September 20, 2006 Thursday Lab:...

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September 20, 2006 Thursday Lab: 1:30-6:00 Recrystallization Purpose : The purpose of this lab is to be able to dissolve a solute into a given solvent and recover the solute in its crystallized form through the process of recrystallization. Recrystallization is the process of dissolving a solute in a solvent at a higher temperature and recooling that solution so that crystals of the solute form because of the fact it is insoluble in lower temperatures of the solvent. This process is essential to chemistry because it is a good method to wholly purify a solid from any impurities. In this experiment, we will be using Acetanilide as the solid to be dissolved in the solvent. The figure below shows the molecular structure of acetanilide. Main Reaction: Table of Data: Initial Mass of Solute (Acetanilide) (g): 1.032 Final Mass of Solute (g): Melting Point: Procedure : 1. Add approximately 1.0g of acetanilide into a flask and add 10ml of water and heat the mixture to a gentle boil. 2. Add water until the oily acetanilide dissolves. Boil the solution until it is about 25ml. 3.
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Lab 1 Recrystallization - September 20, 2006 Thursday Lab:...

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