The solubility of magnesium fluoride in water at 18 °C is tabulated as 0.0076 g per 100 mL.What is the solubility product for this salt? A)7.6 × 10^-6 B)6.8 × 10^-7 C)8.0 × 10^-8 D)7.3 × 10^-9 E)3.8 × 10^-¹⁰

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The solubility product (Ksp) is calculated using the solubility of the salt. For MgF2, which dissociates as MgF2 ⇌ Mg²⁺ + 2F⁻, the Ksp = [Mg²⁺][F⁻]². Given the solubility is 0.0076 g/100 mL, convert to molarity (mol/L) and use stoichiometry to find Ksp.

The Solubility of Magnesium Fluoride in Water at 18 °C