Recrystallization

Objective:
1. To determine the percent recovery from recrytalisation
2. To determine the melting point of the crystals formed
3. To purify a solid by recrystalisation.
Apparatus:
- Erlenmeyer flask
- Filter paper
- Short-stemmed funnel
- Buchner funnel
Material:
- Benzoic acid
- Charcoal
- Boiling chips
Procedure:
About 2.0g of crude benzoic acid was weighed into a 250mL Erlenmeyer flask.
100 - 200mL of water with boiling chips were heated to boiling in a beaker on a hot plate.
An Erlenmeyer flask with a little water and boiling chips in it was heated. A short-stemmed funnel was rest…