Calcium Phosphate is a slightly soluble salt. Here isthe equation for dissolution into ions in water. Ca3(PO4)2(s) <-------> 3Ca+2(aq) + 2PO43-(aq) The expression for Ksp is shown below. It is the productof the molar concentration of the ions raised to the powers of thecoefficients of the ions in the balanced equation. Ksp =[Ca+2]3[PO43-]2 Solution Calcium Phosphate is a slightly soluble salt. Here isthe equation for dissolution into ions in water. Ca3(PO4)2(s) <-------> 3Ca+2(aq) + 2PO43-(aq) The expression for Ksp is shown below. It is the productof the molar concentration of the ions raised to the powers of thecoefficients of the ions in the balanced equation. Ksp =[Ca+2]3[PO43-]2.