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Determination of the solubility of calcium hydroxide Apparatus * Solid calcium hydroxide * 0.4 mol/dm hydrochloric acid * Distilled water * Pipette * Triple valve rubber pipette filler * Conical flask * Beaker * White tile * Clamp and stand * Methyl orange indicator Producing the calcium hydroxide solution 1. Roughly fill a beaker with 200cm³ of distilled water. This does not need to be accurate because samples will be taken from this. 2. Add solid calcium hydroxide, a spatula at a time, and stir to aid the dissolving. 3. Continue to add the calcium hydroxide until no more will dissolve i.e. you can see the solid at the bottom, even after much stirring. The amount of calcium hydroxide needed should be around the value of 0.3g. 4. Fold a piece of filter paper in half, and in half again and pull one side open to form a cone. 5. Place this cone inside the funnel. 6. Set up a container underneath the funnel. 7. Pour the...

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