CaF2(s) ⇌ Ca2+(aq) + 2 F−(aq) Ksp = 4.0 × 10−11 The concentration of F−(aq) in drinking water that i — Equilibrium Chemistry Question
Question
CaF2(s) ⇌ Ca2+(aq) + 2 F−(aq) Ksp = 4.0 × 10−11
The concentration of F−(aq) in drinking water that is considered to be ideal for promoting dental health is 4.0 × 10−5 M . Based on the information above, the maximum concentration of Ca2+(aq) that can be present in drinking water without lowering the concentration of F−(aq) below the ideal level is closest to
A.
0.25 M
B.✓ Correct
0.025 M
C.
1.6 × 10−6 M
D.
1.6 × 10−15 M
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