What is the minimum degree of separation of crystals achieved through recrystallization?

The minimum degree of separation achieved through recrystallization relates specifically to the goal of isolating the desired product from impurities. During recrystallization, a solute is dissolved in a hot solvent and then allowed to cool, leading to the formation of crystals. These crystals typically represent a purer form of the solute because they tend to incorporate only the desired molecules into their solid structure while excluding many different types of impurities based on differences in solubility and crystal lattice structure.

Purity separation emphasizes that the crystals formed will primarily consist of the target compound, thus increasing its overall purity. This process results in the effective separation of the desired compound from impurities that remain dissolved in the solution. The other potential choices do not accurately capture this specific aspect of the recrystallization process, as visual, complete, or impurity separation do not necessarily reflect the result of achieving a purer substance through crystalline formation.