A solution of sodium fluoride is added dropwise to a solution that is 0.0144 M in ionic barium. At what concentration of fluoride ion will barium fluoride start to precipitate? Neglect volume changes, the Ksp for barium fluoride is 1.7x10 –6.
A. 2.4 x 10 –8
B. 1.1 x 10 –2
C. 1.2 x 10 –4
D. 5.9 x 10 –5
E. 2.7 x 10 –3
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