When 100 ML Each of 2

question 19

Multiple Choice

When 100 mL each of 2.0 × 10^-4 M Ca²⁺ and 2.0 × 10^-2 M F- are mixed, what is the remaining Ca²⁺ ion concentration and is precipitation complete? The solubility product constant of CaF₂ is 5.3 × 10^-9.

• A) 5.6 × 10^-4, no
• B) 1.7 × 10^-8, yes
• C) 4.3 × 10^-7, no
• D) 1.7 × 10^-6, yes
• E) 5.4 × 10^-5, no

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