Name: Boiling in a Franklin Flask Category: Thermodynamics Subcategory: Change of State Classes:

Comments: Partially fill the flask with water and add a boiling chip. Heat of the water until boiling vigorously. Withdraw the flask from the heat using thermal gloves or a towel. When no more steam issues from the flask, insert the stopper with the thermometer or temperature probe into the flask firmly. Test security of stopper by inverting the flask OVER THE SINK. If secure, invert flask on ringstand. Place crushed ice in the concave bottom. Water will boil until ice is melted. Keep replenishing the ice until the water has fallen to within 15-20°C of room temperature.

Equipment: Franklin Flask

Location: H104 B3

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