[kappa169]

Hello everyone! This is the question I am having difficulty with

Find Ksp for calcium fluoride at 35 K, given that a 1.00 L sample of the saturated solution, evaporated to dryness by John, produced 36.25 mg of solid CaF2.

Okay, so in my notes I have

Ksp=       [C]^c x [D]^d
         _____________________
              [A]^a x [ B]^b


so its the same formula as finding Keq, what im confused about is how would the equation looked written out so I can input it in the formula and find Ksp? is this right or am I totally off track?

[stewie griffin]

The answer to your question about the formula is yes, and no.
Didn't feel like typing the details all out so go here http://en.wikipedia.org/wiki/Solubility_equilibrium and look under "Dissolution with dissociation".
Use that as your guide.