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Determining the Solubility of Calcium Hydroxide By Osman Khan Lee 12 Apparatus 0.015mol dm-3 calcium hydroxide 0.3mol dm-3 hydrochloric acid Distilled water Methyl orange indicator 50cm3 burette 250cm3 volumetric flask Pipette and pipette filler Beaker Measuring cylinder Conical flask Clamp Stand Filter funnel Method 1. Using a measuring cylinder put 25cm3 of hydrochloric acid into a 100cm3. Using some distilled water rinse out the measuring cylinder and pour the contents into the same beaker containing hydrochloric acid. 2. Next transfer the contents of this beaker to a 250cm3 volumetric flask. It may be necessary to use a volumetric flask, and if so rinse this out once it has been used. Again rinse out the beaker using distilled water and pour the contents into the volumetric flask. 3. Once the hydrochloric acid / water solution is in the volumetric flask, fill the volumetric flask with distilled water until you are about 2-4cm3 from the graduation mark. At this point add water to the volumetric flask using a pipette until...

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