CHM epx report 5 - CHM 151 Experiment Report Student's name...

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CHM 151 Experiment Report Student’s name : Lai Shin Zie ID : I08001607 Partner’s name : Nicholas Chai ID : I08001107 Section : 5A Lecturer’s name : Dr. Palsan A/L Sannasi @ Sannach Due date : 20 June 2008
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13 June 2008 Experiment 5 : Determination of Molar Mass From Freezing-Point Depression. Aim : 1. To determine the freezing point of Naphthalene. 2. To determine the molar mass of the unknown solute. Procedure : Please refer to the laboratory manual page 42 to 43. Results : Table 5.1 The time-temperature reading of naphthalene. Time (minutes) Naphthalene Naphthalene +0.6g solute Naphthalene +1.2g solute Naphthalene +1.8g solute Naphthalene +0.6g X 0 80.0 78.0 77.0 76.0 77.0 0.5 79.0 78.0 75.6 75.0 76.5 1.0 79.5 77.5 75.5 74.2 76.5 1.5 79.5 77.5 75.1 73.1 76.5 2.0 79.5 77.5 75.0 72.5 76.0 2.5 79.5 77.5 74.9 72.0 76.0 3.0 79.5 77.5 74.8 72.0 76.0 3.5 79.5 77.0 74.7 72.0 76.0 4.0 79.0 77.0 74.6 72.0 75.5 4.5 79.0 77.0 74.5 72.0 75.5 5.0 79.0 77.0 74.4 71.5 75.5 5.5 78.5 77.0 74.3 71.5 75.5 6.0 78.5 77.0 74.1 71.5 75.0 6.5 78.5 77.0 73.9 71.5 74.5 7.0 78.5 77.0 73.9 71.0 74.5 7.5 78.5 76.5 73.8 71.0 74.5 8.0 78.5 76.5 73.0 70.8 74.0 8.5 78.5 76.0 72.8 70.5 73.9
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9.0 77.5 75.5 72.5 70.5 73.5 9.5 77.5 75.0 71.9 70.2 73.1 10.0 77.5 74.5 71.7 70.0 72.5 *solute is benzophenone
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CHM epx report 5 - CHM 151 Experiment Report Student's name...

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