a |
When dissolving CaF2 in water, what is the relation between [Ca2+] and S and between [F-] and S? |
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b |
Only one relation stands when dissolving CaF2 in Ca(NO3)2-solution 0.100 mol/L. Which one? |
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c |
Write an expression for S in function of Ksp and [Ca2+]? |
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d |
In the saturated solution there are two kinds of Ca2+-ions. Most Ca2+-ions were already present at the start: co. |
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e |
Express the extra [Ca2+] due to the dissolving of CaF2 in function of S. |
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f |
What do you know about those two concentrations? |
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g |
Now calculate the solubility of CaF2 in a Ca(NO3)2-solution 0.100 mol/L. |
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