Question

$K_{sp}$ of $Z{e}_3(P{O}_4{)}_4$ in terms of solubility $\left(S\right)$ is:

• A. $108S^7$
• B. $4S^3$
• C. $6912S^7$
• D. none of these

Answer 1

The correct option is C $6912S^7$

Here, $\left[Z{r}^{4+}\right]$ $=3S$ and $\left[{PO}_4^{3-}\right]$ $=4S$

$K_{sp}=\left(3S{)}^3\right(4S{)}^4$ =$6912({S)}^7$.

The correct option is $C$.