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Crystallization is used to purify a solid. The process requires a suitable solvent. A

suitable solvent is one which readily dissolves the solid (solute) when the solvent is hot

but not when it is cold. The best solvents exhibit a large difference in solubility over a

reasonable range of temperatures. (eg, Water can be a crystallization solvent between

0-100oC; hydrocarbon solvents such as hexanes or petroleum ether have a different T

range since they can be cooled below 0 degrees but boil below 100 degrees).

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Paul Wyman

Lvl 13
3y ago

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