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The molar solubility of calcium fluoride is 2.13104mol/L in pure water at 25C. What is the molar solubility of calcium fluoride in 0.100MNaF at 25C

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The molar solubility of calcium fluoride is 2.13104mol/L in pure water at 25C. What is the molar solubility of calcium fluoride in 0.100MNaF at 25C ? (Assume that the only relevant reaction is the solubility-product equilibrium.) 2.13104mol/L2.13102mol/L3.87109mol/L4.54107mol/L

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