Answer;
occurs after the liquid melt cools back to a solid
The purging of impurities from a compound by crystallization occurs after the liquid melt cools back to a solid.
Explanation;
- Purging of impurities from a compound by crystallization is done through a method known as melt crystallization. Melt crystallization is a type of cooling crystallization process which is operated close to the melting point of the pure compound.
- The sample for melt crystallization id normally an impure compound. When the impure sample is cooled below the equilibrium temperature the result is formation of a solid phase which is more pure that the initial compound, while the impurities remain in the impure sample.
