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Calcium hydroxide
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==Solubility== Calcium hydroxide is moderately soluble in water, as seen for many dihydroxides. Its solubility increases from 0.66 g/L at 100 Β°C to 1.89 g/L at 0 Β°C.<ref name=Ullmann/> Its [[Solubility product|solubility product ''K''<sub>sp</sub>]] of 5.02{{e|β6}} at 25 Β°C,<ref name="crc" /> its dissociation in water is large enough that its solutions are basic according to the following dissolution reaction: : Ca(OH)<sub>2</sub> β Ca<sup>2+</sup> + 2 OH<sup>β</sup> The solubility is affected by the [[common-ion effect]]. Its solubility drastically decreases upon addition of hydroxide or calcium sources.
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