what would the overall reaction be for the recrystillzation of aspirin using 91% isopropanol to get pure aspirin?(drawn out) what would the mechanism be(if any)? More information provided below: You are removing salt, talc and other impurities to get pure aspirin. Recrystallization is a useful technique that can be used to purify solid organic compounds. Thistechnique involves the solubility of organic solids in various solvents. For recrystallization towork properly, the target compound must dissolve in a solvent when it is hot and not dissolvewhen it is cold. In this experiment you will isolate pure aspirin from aspirin tablets. Aspirin tabletscontain various salts and impurities in addition to aspirin. By using recrystallization, you will beable to remove the impurities and be left with pure aspirin.Sometimes pairs of solvents can used to produce better results. In this experiment, 91%isopropanol will be used to recrystallize aspirin. The 91% isopropanol contains 91% isopropanoland 9% water so it is really a mixture of two solvents. Most of the impurities will not dissolve inthe hot isopropanol solution but the aspirin will. Once the aspirin dissolves, the impurities will befiltered out of the solution. After the solution is cooled, pure aspirin will crystallize out ofthe isopropanol solution.
what would the overall reaction be for the recrystillzation of aspirin using 91% isopropanol to get pure aspirin?(drawn out)
what would the mechanism be(if any)?
More information provided below:
You are removing salt, talc and other impurities to get pure aspirin. Recrystallization is a useful technique that can be used to purify solid organic compounds. This
technique involves the solubility of organic solids in various solvents. For recrystallization to
work properly, the target compound must dissolve in a solvent when it is hot and not dissolve
when it is cold. In this experiment you will isolate pure aspirin from aspirin tablets. Aspirin tablets
contain various salts and impurities in addition to aspirin. By using recrystallization, you will be
able to remove the impurities and be left with pure aspirin.
Sometimes pairs of solvents can used to produce better results. In this experiment, 91%
isopropanol will be used to recrystallize aspirin. The 91% isopropanol contains 91% isopropanol
and 9% water so it is really a mixture of two solvents. Most of the impurities will not dissolve in
the hot isopropanol solution but the aspirin will. Once the aspirin dissolves, the impurities will be
filtered out of the solution. After the solution is cooled, pure aspirin will crystallize out of
the isopropanol solution.
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