Question

In the first recrystallization, after the solid has been dissolved in warm acetone, the solution is allowed to cool slowly to room temperature. In an older procedure the warm solution was placed directly into an ice bath. How does this older procedure differ from a normal recrystallization and what might be the consequences

Answer 1

The older procedure of placing the warm solution directly into an ice bath cools the solution more rapidly, resulting in smaller and less pure crystals. Allowing the solution to cool slowly to room temperature in a normal recrystallization allows for the formation of larger and more pure crystals.

Step-by-step explanation:

The older procedure of placing the warm solution directly into an ice bath differs from a normal recrystallization in that it cools the solution more rapidly. The consequences of using the older procedure are that the crystals may form too quickly, resulting in smaller and less pure crystals. In contrast, allowing the solution to cool slowly to room temperature in a normal recrystallization allows for the formation of larger and more pure crystals.