| 1. | Safety |
| 2. |
Objectives/Overview |
| 3. |
Procedures |
|
4. |
Observations |
| 5. | |
| 6. | |
| 7. | |
| 8. | Conclusions |
| 9. | Calculations/Set-Ups |
| 10. | Grading Scale |
| 11. | Review Prelab Questions |
|
12. |
Review Postlab Questions |
Experiment
14
Using
Freezing Point Depression to Find Molecular Weight
WASTE DISPOSAL/CLEANUP
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Return the test tube and probe to the hot water bath. When the mixture is completely liquefied, remove the probe.
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Carry the hot test tube to the disposal container and pour the liquid into the container. Use the squeeze bottle of acetone to rinse the test tube twice with 2 or 3 mL of acetone. The acetone must be poured into the container labeled "Acetone Waste". DO NOT combine the two different waste products.
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Place the rinsed test tube in the tray provided.
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Carefully rinse the temperature probe with acetone from a squeeze bottle. Two or 3 milliliters is sufficient. The waste should be poured into the "Acetone Waste" container.
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Dry the probe with a Kimwipe and lay the probe on a clean paper towel.
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Clean up your area by organizing and storing the equipment and washing glassware. Wash your hands.
CAUTION: acetone is flammable; extinguish all flames
