Question

Which is the solubility product expression for CaF2(s)? 

[Ca2+]/[F–]2 
[Ca2+][F2–] 
[Ca]+[F]2 
[Ca2+][F–]2

Answer 1

Answer:The solubility product expression for $CaF_2$.

$K_{sp}=[Ca^{2+}]\times [F^-]^2$

Explanation:

Solubility product is defined as product of concentration of dissociated ions raised to the power equal to respective stoichiometric coefficient.

The solubility product of $CaF_2$

$CaF_2\rightleftharpoons Ca^{2+}+2F^-$

$K_{sp}=[Ca^{2+}]\times [F^-]^2$

The solubility product expression for $CaF_2$.

$K_{sp}=[Ca^{2+}]\times [F^-]^2$