Outline the successive steps in the crystallization of an organic solid from a solvent and state the purpose of each operation. (1.5 points)

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06-11-2019
Chemistry

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Outline the successive steps in the crystallization of an organic solid from a solvent and state the purpose of each operation. (1.5 points)

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udoikono udoikono · Answer 1 · 2019-11-06T15:20:11+01:00

Answer and Explanation:

Steps Of Crystallization

1). Solvent selection: '. It is important that the selected solvehave a low boiling point to facilitate the dissolution of solutes.

2). Dissolution: the given compound is placed in the the solution and stirred to to dissolved the solid and impurities too.

3). Decolorization: I'm the presence of any colored impurities, a small amount of charcoal is added to the solution to the solution to trap the color and precipitate it

4). Filtration (Impurities): the solution is filtered again to remove the charcoal alongside the impurities trapped in it.

5). Crystallization: the solution is allowed to cool at room temperature. So that the crystal can form forms.

6). Filtration (Compound): this step is to filter the solvent in order to remove all impurities including soluble solids and collect the crystal on the filter paper

7). Drying: the crystals is dried to remove any form of solvent trapped within it.

throwdolbeau throwdolbeau · Answer 2 · 2022-02-17T13:41:48+01:00

Steps Of Crystallization:

1. Solvent selection

2. Dissolution

3. De-colorization

4. Filtration of impurities

5. Crystallization

6. Filtration of Compound

7. Drying

Let's see all steps in brief:

1) Solvent selection: The compound should be very soluble in the hot solvent and minimally soluble (or insoluble) in the cold solvent.

2) Dissolution: the given compound is placed in the the solution and stirred to to dissolved the solid and impurities too.

3) De-colorization: It is usually carried out in the solution phase after the solid product and impurities are dissolved in a suitable solvent

4) Filtration (Impurities): The solution is filtered again to remove the charcoal alongside the impurities trapped in it.

5) Crystallization: the solution is allowed to cool at room temperature. So that the crystal can form forms.

6) Filtration (Compound): This step is used to filter the solvent in order to remove all impurities including soluble solids and collect the crystal on the filter paper

7) Drying: The crystals is dried to remove any form of solvent trapped within it.

Find more information about Crystallization here:

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