How many times the solubility of \( \mathrm{CaF}_{2} \) is decrease...

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How many times the solubility of \( \mathrm{CaF}_{2} \) is decreased
P in \( 4 \times 10^{-3} \mathrm{M}-\mathrm{KF}(\mathrm{aq}) \) solution as compared to pure

W water at \( 25^{\circ} \mathrm{C} \). Given: \( \mathrm{K}_{\mathrm{sp}}\left(\mathrm{CaF}_{2}\right)=3.2 \times 10^{-11} \)
(1) 50
(2) 100
(3) 500
(4) 1000
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