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Solubility A comparison of three substances in group 17 of the periodic table Erik Thörnblad, IB06A-PDP 2007-04-21 Aim The aim for this lab was to investigate how the altering of anions does affect the solubility of three different substances. Variables The independent variables were the salts, which were altered throughout the experiment. The solubility was the dependent variable, and the controlled variables were the temperature and the volume o the water. Equipment * 6.41 g Potassium Chloride, * 6.41 g Potassium Bromide, * 6.41 g Potassium Iodide, * 5 g water, (for each experiment) Magnetic stirrer, magnet, funnel, filter (0.87 g), two beakers (20 ml 17.27 g), spoon, scale with an uncertainty of ± 0.005 g and a graduated cylinder with an uncertainty of ± 0.05 ml Method At first, 5 ml (5 g) water was filled up with the graduated cylinder, and then moved to the beaker. The beaker was then filled with an excess of Potassium Chloride. The beaker was put on a...

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