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111. Solving a chemistry problem
Uploaded:
24.08.2022
Content: 516.rar 18,72 kB
Content: 516.rar 18,72 kB
Product description
516. A portion of a sample containing copper (II), weighing 3.1012 g, was dissolved in a volumetric flask with a volume of 100.0 ml. An aliquot of the resulting solution with a volume of 10.00 ml was treated with an excess of potassium iodide, and the released iodine was titrated with 9.85 ml of a 0.05000 mol/l solution of sodium thiosulfate. Calculate the mass fraction of copper(II) in the sample as a percentage.
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