Colligative Properties: Freezing-Point Depression and Molar Mass

Name: Patrick Morefield Date: December 06, 2006
Lab Partner: Gabriel Rodriguez unnamed No.: 941

Report Sheet
Colligative Properties: Freezing-Point Depression and Molar sess

|1. |Volume of cyclohexane |10..1mL |
|2. | potty of empty insulated test tube and kink bar |345.47g |
| |Mass of stir bar, tube and cyclohexane |353.10g |
| |Mass of cyclohexane |7.63g |
|3. |Mass of insulated test tube, spin bar, cyclohexane and |353.25g |
| |unknown | |
|4. |Mass of unknown |0.15g |

A. heat Curve Data-Pure Cyclohexane
| season |Temp °C | epoch |Temp °C |Time |Temp °C |Time |Temp °C |
|2.56.30 |6.9 |2.59.30 |6.8 |3.02.30 |6.8 |3.05.30 |7.9 |
|2.57.00 |6.9 |3.00.00 |6.9 |3.03.00 |6.9 |3.06.00 |8.2 |
|2.57.30 |6.9 |3.00.30 |6.9 |3.03.30 |6.9 |3.06.30 |8.



5 |
|2.58.00 |6.8 |3.01.00 |6.8 |3.04.00 |7 |3.07.00 |8.9 |
|2.58.30 |6.8 |3.01.30 |6.8 |3.04.30 |7.1 |3.07.30 |9.2 |
|2.59.00 |6.9 |3.02.00 |6.8 |3.05.00 |7.6 |3.08.00 |9.5 |


[pic]
5. Freezing point of pure cyclohexane, from warming Curve is 6.0°C














B. Warming Curve Data-Solution Containing Unknown 941
Trial 1
|Time |Temp °C |Time |Temp °C |Time |Temp °C |
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