Which purpose does recrystallization serve?

(Select all correct answers.)

It is used to purify liquids.
To separate unreacted solid starting materials from the solid target compound.
To remove a solid from a liquid.
It is used to purify solids.
Improve the yield of the compound

Recrystallization serves multiple purposes, including:

1. It is used to purify liquids: When a liquid contains impurities, recrystallization can be used to remove these impurities and obtain a purified liquid.

2. To separate unreacted solid starting materials from the solid target compound: In certain chemical reactions, there may be unreacted solid starting materials mixed with the desired solid product. Recrystallization can be employed to separate these components by taking advantage of their different solubilities.

3. To remove a solid from a liquid: If a solid substance is dissolved in a liquid and needs to be isolated, recrystallization can be used. By cooling or adding certain solvents or reagents, the desired solid can be crystallized out of the liquid, allowing for its separation.

4. It is used to purify solids: Similar to purifying liquids, recrystallization is an effective method to purify solid compounds. By dissolving the impure solid in a suitable solvent and then allowing the compound to recrystallize, the impurities are left behind in the mother liquor, resulting in a purified solid product.

5. Improve the yield of the compound: Recrystallization can also improve the yield of a compound. By selectively growing crystals of the desired compound and removing impurities, the overall purity and quantity of the product can be increased.

So the correct answers are:
- It is used to purify liquids.
- To separate unreacted solid starting materials from the solid target compound.
- To remove a solid from a liquid.
- It is used to purify solids.
- Improve the yield of the compound.