Question: A solution contains 0.00750 M calcium ion. A concentrated sodium fluoride solution is added to precipitate calcium fluoride (assume no volume change). a. At what

A solution contains 0.00750 M calcium ion. A concentrated sodium fluoride solution is added to precipitate calcium fluoride (assume no volume change).
a. At what concentration of F does precipitate start to form?
b. When [F] = 9.5 ×10-4 M, what is the calcium-ion concentration? What percentage of the calcium ion has precipitated?

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