i feel like none of these answers are right.

Question

if the solubility of the solid is 'S' mol/ L, what is the Ksp of the product of the salt?

Ca3PO42-(s) --> 3Ca2+(aq) + 2PO42- (aq)

A)ksp=S^2
B)ksp=4S^3
C)ksp=27S^4
D)ksp=108S^5

Only leaning towards D because its the only one that makes sense...

ksp=[3Ca2+]^3[2PO42-]^2 ????
ksp=108S^5

Answer 1

See my response to your post above.