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Determination of the solubility of calcium hydroxide.
The first 200 words of this essay...
Determination of the solubility
of calcium hydroxide
I am aiming to determine the solubility of calcium hydroxide. Calcium hydroxide is an alkali and limewater is a saturated solution of it, therefore I can titrate it against an acid of whose concentration I know. Using this information I will be able to accurately estimate the concentration of the calcium hydroxide solution. I will be provided with limewater, which has an approximate concentration of 0.015 mol dm-3 and a solution of hydrochloric acid which has a known concentration of 0.3 mol dm-3. The concentration of the acid is too high so it will need to be diluted.
Concentration of the acid
Hydrochloric Acid + Limewater --> Calcium Chloride + Water
Ca(OH)2 + 2HCl --> 2CaCl + 2H2O
By observing the above equation I know that the calcium hydroxide reacts with the HCl in the ration 1:2, with the concentrations of the solutions at 0.015 and 0.3 mol dm-3 the ratio is 1:20 which means the reaction will take place far too fast to find an accurate end point. Therefore I am going to dilute the acid with
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