General Chemistry laboratory, Chem18Experiment #4Date of Experiment:10/4/2011Date of Submission:10/25/2011Abstract:This lab was performed in two parts: the first consisted of synthesizing two separate solid complex compounds, K2[Cu(C2O4)2].nH2O and K3[Al(C2O4)3].nH2O, and the second involved the filtration of these compounds. In the first reaction, copper(II) sulfate pentahydrate and potassium oxalate monohydrate were the reagents used, and in the second reaction, aluminum, potassium hydroxide, and oxalic acid dihydrate were the reagents used. In the process, oxidation-reduction chemistry occurs in the copper and the aluminum. After synthesizing both reactants, the washing of the precipitates with water and ethanol and the use of a vacuum helped filter out final products. After filtration and a waiting period for the precipitates to dry, the final masses were weighed. The actual weight of the K2[Cu(C2O4)2].nH2O was 3.25 g, and the actual weight of the K3[Al(C2O4)3].nH2O was 3.40 g. By calculating the limiting
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