When 100 ML Each of 2

question 68

Multiple Choice

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

• A)5.6 × 10^-4 M,no
• B)1.7 × 10^-8 M,yes
• C)4.3 × 10^-7 M,no
• D)1.7 × 10^-6 M,yes
• E)5.3 × 10^-5 M,no

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