When solid is in equilibrium with its saturated solution at 25 °C

CHEMISTRY · Single correct · AP · Chemistry · Equilibrium · Equilibrium

Problem

When solid

\text{Ca}_3(\text{PO}_4)_2

is in equilibrium with its saturated solution at 25 °C, the molar solubility of the salt is

s\,\text{mol}\,\text{L}^{-1}

. Which of the following is the correct expression for

K_{sp}

in terms of

s

? (a)

6s^{2}

(b)

108s^{5}

(c)

s^{5}

(d)

27s^{3}