The goal of the recrystallization procedure is to obtain purified material with

Question

The goal of the recrystallization procedure is to obtain purified material with a maximized recovery. For each of the items listed, explain why this goal would be adversely affected. In the solution step, an unnecessarily large volume of solvent is used. The crystals obtained after filtration are not washed with fresh cold solvent before drying. The crystals obtained after filtration are washed with fresh hot solvent. Crystallization is accelerated by immediately placing the flask of hot solution in an ice-water bath.

Explanation / Answer

a) You will get a lower amount of crystals. A large amount of the compound still is present in your solution.

b) the purity of the crystals will effect. Impurities may possible to stick to the filter along with your crystals.

c) Again with this, we will have a lower recovery of crystals. Because the collected crystals dissolve into fresh hot solution.

d) We will end up with lower purity. because, when crystallisation is forced, impurities would be trapped in the crystal lattices and would not be removed by filtration.

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