This technique may be performed using Craig tubes. For 10 points each:
[10h] Name this technique which leaves behind a solution called the mother liquor. Chemists may use a stir rod to scratch the flask in order to help initiate this purification process.
ANSWER: recrystallization
[10m] This technique partitions compounds by solubility into aqueous and organic phases. It is performed using separatory funnels.
ANSWER: liquid-liquid extraction [or LLE; accept solvent extraction; prompt on partitioning]
[10e] Following extraction, these substances may be removed from the sample using a rotovap. Water is often referred to as the “universal” one of these substances.
ANSWER: solvents
<DN, Chemistry>