Experiment 1: Melting Point Name: TA: Pre-Lab Questions Read Sesctions 2.7 and 3

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Experiment 1: Melting Point Name: TA: Pre-Lab Questions Read Sesctions 2.7 and 3.3 (pg 36-39 111-115) in Experimental Organic Chemistry and Martin 1. If you heat your melting point tube too comparison to the actual melting point? quickly, what will your observed melting point be in re meiina point e ouil be nigror then tme truc volue 2. How fast should you heat a sample? l-a'C per minute 3. You melt a sample of a diphenylacetylene that you found on a shelf in a laboratory and you observe a melting point of 151-153 °C. What does this tell you about your bottle of diphenylacetylene? 4. An unknown compound X is one of the three compounds listed in the table below. A mixt of X with 4-chlorophenylacetic acid melts at 95-102 °C, a mixture of X with oxalic acid mel 93-101 °C, and a mixture of X with 2-methylbenzoic acid melts at 103-105 °C. Give the ide of X and explain your reasoning. Compound oxalic acid 4-chlorophenylacetic acid 2-methylbenzoic acid 101-102 103-105 104-105

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Experiment 1: Melting Point Name: TA: Pre-Lab Questions Read Sesctions 2.7 and 3

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