Experiment 2 - Sison Stefani CHM 317L-05 Tues 4:00-6:50pm Questions 1 Important solubility characteristics for a solvent to have for crystallization of

Experiment 2 - Sison Stefani CHM 317L-05 Tues 4:00-6:50pm...

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Sison, Stefani CHM 317L-05 Tues. 4:00-6:50pm October 26, 2015 Questions 1. Important solubility characteristics for a solvent to have for crystallization of an organic solid that is contaminated with a small amount of impurity include: - the solvent having a relatively low boiling point compared to melting point; should have a low boiling point so it doesn’t overheat sample and evaporation can occur - the solvent is able to dissolve organic compounds of interest when hot - the solvent should also be unable to dissolve organic compounds of interest or have little-to-none solubility if solvent is cool and at room temperature. 2. You can improve the percent recovery of crystals during the recrystallization process by keeping the solution hot during the filtration process. This is done so the crystals, when cooled, are lost during the process. This will help yield a better percent
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