What is the Molar Solubility of BaF2 in Water and NaF Solution?

[kirsten_2009]

Homework Statement

A.) Calculate the molar solubility of barium fluoride BAF2 in water at 25 degrees Celsius. The solubility product constant for BaF2 at this temperature is 1.0 x 10^-16

B.) What is the molar solubility of BaF2 in 0.15 M NaF at 25 degrees Celsius? Compare the solubility in this case with that of BaF2 in pure water.

Homework Equations

A + B --> C + D

Ksp = [D][C] / [A]

The Attempt at a Solution

No clue...

 

[Borek]

What is exact formula for Ksp of BaF₂? How are the concentrations of F^- and Ba²⁺ related? (hint: take a look at the compound formula).

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methods