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Calculating the solulailty of an ionic compound when a common ion is…
Calculate the solubility at of CaF 2 in pure water and in a 0.0100 MNaF solution. You’ll find sp , data in the ALEKS Data tab.
Round both of your answers to 2 significant digits.
solubility in pure water:

Ask by Boyd Parsons. in the United States
Mar 26,2025

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The solubility of CaF₂ in pure water at is .

Solución

Let the solubility (molar concentration of dissolved CaF ) in pure water be (in M). When CaF dissolves, it dissociates according to
Thus, if moles per liter dissolve, then
The solubility product expression is
Using the ALEKS data, we have
Setting up the equation:
Solve for :
Taking the cube root (using logarithms or a calculator) gives approximately
Thus, the solubility of CaF in pure water at is

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