Chem3A Lab 2 - Gary Lam Experiment 2: Mixed Melting Points...

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Gary Lam Experiment 2: Mixed Melting Points Discussion: Part I) After I got my unknown sample, which consisted of small white particles, and found the melting point range via melting point analysis, I looked for someone with around the same melting point (within 4ºC). I found two people, partner 1 with a sample that looked like mine and partner 2 with a sample that consisted of opaque, white crystallized particles that were slightly bigger than mine. With each partner, we used melting point analysis after mixing our two samples. The mixed sample with partner 1 had the same melting point range as my pure sample. The mixed sample with partner 2 had a lower melting point that my pure sample. Since impurities decrease the melting point range and the sample with partner 1 had the same melting point as my pure sample, I could identify that partner 1 and I had the same unknown solid. Part II) The eutectic point occurs around the 40:60 ratio composition of A:B. In the diagram, this is where the average final melting temperature is the lowest. In the raw
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Chem3A Lab 2 - Gary Lam Experiment 2: Mixed Melting Points...

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