Question

Identify the characteristics of a good recrystallization solvent.

a) Low solubility at high temperatures
b) High solubility at all temperatures
c) Similar chemical structure to the solute
d) No reaction with the solute

Answer 1

A good recrystallization solvent should have low solubility at high temperatures, no reaction with the solute, and a similar chemical structure to the solute.

Step-by-step explanation:

A good recrystallization solvent should have the following characteristics:

1. Low solubility at high temperatures: This allows the compound of interest to dissolve at high temperatures, making it easier to remove impurities. When the solvent is cooled, the compound should have a lower solubility, causing it to recrystallize.
2. No reaction with the solute: The solvent should not react chemically with the compound being recrystallized. This ensures that the purity of the compound is maintained.
3. Similar chemical structure to the solute: A solvent with a similar chemical structure to the solute can improve solubility and help facilitate the recrystallization process.