What Is the Molar Solubility of PbF₂ in a Buffer

question 78

Multiple Choice

What is the molar solubility of PbF₂ in a buffer solution in which the [H⁺] concentration is roughly constant at 0.080 M? (K_sp of PbF₂ is 3.2 *10^-8; K_a of HF =6.8 * 10^-4.)

• A)1.1 * 10^-4
• B)3.2 *10^-
• C)7.4 * 10^-3
• D)8.4* 10^-3
• E)4.8 * 10^-2

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