... acidity means removing the H+ (aq) ions by reaction with a base. Destroying alkalinity means removing the OH- (aq) ions by reaction with an acid. The acid and alkali particles must be in exactly equal amounts to get a perfectly neutral solution. Neutralisation Acid + Alkali = Salt + Water H+(aq) + OH- (aq) = H20 (l) Aim: In this experiment I am going to determine the solubility of calcium hydroxide in water by titrating against a known concentration of hydrochloric acid. I will collect the data that from titration in order to calculate the solubility of Ca(OH)2. Materials: * Volumetric flask of 250cm3 * Conical flask 250cm3 * Burette for titration that contain Ca(OH)2 solution * Pipette 25cm3 * Pipette filler * Methyl orange indicator to show the end point of the reaction i.e. when the orange is achieved * White tile to be able to see clearly the end point of the reaction. * Clamp stand to hold the burette * ...

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