A 5000-ML Sample of 0

question 109

Multiple Choice

A 50.00-mL sample of 0.100 M Ca(NO₃) ₂ is mixed with 50.00 mL of 0.200 M NaF. When the system has come to equilibrium, which of the following sets of conditions will hold? The K_sp for CaF₂ is 4.0  10^-11.

• A) 10.0  10^-3 1.3  10^-5 M 1.3  10^-5 M
• B) 5.0  10^-3 3.5  10^-4 M 7.0  10^-4 M
• C) 5.0  10^-3 2.2  10^-4 M 4.3  10^-4 M
• D) 5.0  10^-3 3.5  10^-4 M 4.3  10^-4 M
• E) 5.0  10^-3 3.4  10^-9 M 5.0  10^-2 M

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