Equipment:

- Data collection system

- Stainless steel temperature sensor

- Absolute pressure sensor with quick-release connectors and plastic tubing

- Sensor extension cable

- Beaker, 1500-mL

- Beaker, 50-mL

- Erlenmeyer flask, 250-mL

- Graduated cylinder, 50-mL

- Hot plate with magnetic stirrer and stirring bar

- Clamp, utility

- Ring stand

- 100% Ethanol (C2H5OH), 50 mL

- Acetone ((CH3)2CO), 50 mL

- Rubber stopper, 2-hole

- Glycerin, 2 drops

- Water, 1200 mL

Saftey:

1. Organic solvents are extremely flammable; have no open flame in the lab during the experiment.

2. Do not inhale the fumes of volatile organic liquids.

Method:

1. Once the ethanol starts to boil, allow a few minutes for the ethanol fumes to fill the flask

2. Remove the flask from the water bath and immediately insert the stopper tightly

3. Start recording data

4. Continue the data collection until the temperature drops to about 30 C

5. Stop recording data

6. Discard the ethanol as instructed by your teacher and rinse the flask

7. Repeat the procedure with a 60 C water bath and 50 mL of acetone. Allow the flask to cool to about 25 C

8. Display both data runs

9. Print the graph

10. Save your experiment and clean up according to your teacher's instructions