1. when doing a recrystallization using a buchner funnel, what happens to the impurities that are more soluble than your compound in the solvent used?
2. When doing a recrystallization, why is it important to allow the saturated solution to boil for ~1 minute and cool SLOWLY to room temperature before placing it in an ice-water bath?
3. If a substance is impure, what will be the two effects on its melting point, compared to the literature value?