Essential Chemistry for IGCSE - Particles And Purification (Section 7 - No. 14)
Which of the following is a characteristic of a good solvent for recrystallization?
It dissolves the desired compound well at room temperature.
It dissolves the impurities well at all temperatures.
It dissolves the desired compound well when hot and poorly when cold.
It reacts chemically with the desired compound.
Explanation
A good solvent dissolves the compound when hot and leaves it undissolved when cold, allowing for crystal formation as it cools.
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