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Unformatted text preview: Table 1: Melting Ranges of Compounds Graph 1: Melting Range vs. Ratio of A t o B Michael Li Roster Number 9 GSI: Angie Park Experiment 3: Mixed Melting Points Part I Mixed melting points were used in this part of the experiment to determine if someone else had the same compound as you. After individually determining your own melting point, you found someone with a similar melting range. These two compounds were then mixed and a new melting point was determined for the mixed compound. My compound had a melting range of 79-82 degrees Celsius, and I made a mixture with Elaine Owen, who had a similar melting range. However, after mixing our compounds, the melting point was depressed. This meant that we had different compounds. The depressed melting point could be attributed to a possible disruption of intermolecular forces. After performing this same test with Jon Lavian, we determined our compounds were identical since the melting range was not affected when we mixed our solids. After comparing my experimentally determined melting range to the accepted value of the possible compounds, I determined that my solid was alpha-hydroxyisobutyric acid....
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- Spring '08