Recrystallization

Recrystallization - Recrystalliation is a method to purify...

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Recrystalliation is a method to purify a given compound. Although, no compound is ever 100% pure, nevertheless we seek to achieve the highest state. Recrystallization is a very similar technique we use in our daily life. For ex, when we eat a hamburger, we don’t eat in pink and raw from the slaughter house, rather we in a sense “purify” by cooking it in high heat destroying bacteria and other impurities. Similarly, we boil off the recrystallizing solution to get rid of the impurity. A good pure crystal of a certain compound is important because when doing analytical experiment it will give a good result and the smallest amount of error related to the impurity of the compound. Recrystallization is a process in which requires a solute-solvent pair that dissolves in a solvent in hot temperature and solidifies in cold temperature. If the solute and solvent pair had a really good solubility to each other, it wouldn’t produce any crystal. For ex, if you boil salt water then cool it to RT then dip in the ice bath, there would be no crystals
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This note was uploaded on 05/06/2008 for the course CHEM 51LB taught by Professor Staff during the Fall '04 term at UC Irvine.

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Recrystallization - Recrystalliation is a method to purify...

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