chem 121

explain why washing an impure solid with a cold solvent is not good as recrystallization for removing all the soluble impurities?
why is the final product from a recrystallization isolated by a suction rather than gravity filtration?

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  1. Recrystallization tends to leave out the impurities because they don't fit into th crystal lattice.

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  2. Or another way is that washing with a solvent will not remove material trapped in the solid.

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