A beaker contains a solution of at 25 °C

CHEMISTRY · Subjective · AP · Chemistry · Equilibrium · Equilibrium

Problem

A beaker contains a

0.0050\,\text{M}

solution of

\text{Ca}^{2+}

at 25 °C. The solubility-product constant for Ca

_3

(PO

_4

)

_2

1.0\times10^{-25}

. Determine the minimum phosphate-ion concentration (in M) required to initiate precipitation of Ca

_3

(PO

_4

)

_2