Experiment 1-Crystallization, Melting Point, and Solubility

Experiment 1-Crystallization, Melting Point, and Solubility...

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Daya Devanathan Nolan Graves 9/10/10 Experiments:2A, 2C, 2D, 3A, and 3E
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Abstract: The purpose of this experiment was to determine the solubility of different solutes in certain solvents, to determine whether the mixtures were miscible or immiscible, to crystallize impure sulfanilamide using 95% ethyl alcohol as the solvent, and to determine the melting point of the pure sulfanilamide. In the Part 2A: Solubility of Solid Compounds experiment, approximately . 040 g benzophenone was placed in four dry, labeled test tubes. Then 1 ml water was added to the first, 1 ml methyl alcohol to the second, 1 ml hexane to the third, and the fourth test tube served as the “control.” The first two test tubes were found to be insoluble, while the third was soluble. The experiment was repeated using malonic acid and biphenyl, keeping the solvents constant. For malonic acid, the first test tube was found to be partially soluble, the second was found to be soluble, and the third was found to be insoluble. For biphenyl, both the first and second test tubes were found to be insoluble, while the third was found to be soluble. In the Part 2C:Miscible or Immiscible Pairs experiment, pairs of already prepared compounds were placed in five separate test tubes, with each test tube containing a different pair. Both the water / ethyl alcohol and hexane/ methylene
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Experiment 1-Crystallization, Melting Point, and Solubility...

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