......is a technique to separate impurities from chemical products:
Correct answer: B. Fractional crystallization
- A. Lands Berger's method
- B. Fractional crystallization
- C. Beckmann method
- D. None
Explanation
As the solution cools, the solubility of the compound (and of the soluble impurities) decreases, the solution becomes saturated with the desired compound, and the compound begins to crystallize. Removing the solution from the crystals thus removes the solvent and the soluble impurities from the desired crystals.
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