Calcium Solubility in water?

Question

http://www.lenntech.com/elements-and-water/calcium-and-water.htm

I found that link, and it says :
Solubility of calcium and calcium compounds

Elementary calcium reacts with water. Calcium compounds are more or less water soluble. Calcium carbonate has a solubility of 14 mg/L, which is multiplied by a factor five in presence of carbon dioxide. Calcium phosphate solubility is 20 mg/L, and that of calcium fluoride is 16 mg/L. Calcium chromate solubility is 170 g/L, and at 0oC calcium hypo chlorate solubility is 218 g/L. Solubility of other calcium compounds lies between the levels of these examples, for example calcium arsenate 140 mg/L, calcium hydroxide 1.3 g/L and calcium sulphate 2.7-8.8 g/L.

I know absolutely nothing about chemistry.. (well sorta)
But it just says Calcium reacts in water.. Is this opposed to solubility or is it just some arbitrary fact they put in there..?

I just need Calcium's Solubility in water.. not any calcium compounds.

Answer 1

Contrary to magnesium placed directly above calcium in the periodic chart, elementary calcium reacts with water at room temperature, according to the following reaction mechanism:



Ca (s) + 2H2O (g) -> Ca(OH)2 (aq) + H2 (g)



Read more: http://www.lenntech.com/elements-and-water/calcium-and-water.htm#ixzz0FcLWVCX0&B



In short, calcium is not soluble in water because it reacts rather than dissolves.



My take on the statement about calcium solubility is that they are talking about calcium compounds, not calcium metal.

Answer 2

Is Calcium Soluble

Answer 3

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Calcium sulfide solubility is difficult to say since it reacts with water! On that basis it dissolves. Calcium sulfide decomposes upon contact with water, including moist air, giving a mixture of Ca(SH)2, Ca(OH)2, and Ca(SH)(OH). CaS + H2O → Ca(SH)(OH) Ca(SH)(OH) + H2O → Ca(OH)2 + H2S

Answer 4

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