Chapter 19, Problem 19.121P

Interpretation Introduction

Interpretation:

Solubility of $C{a}_5{\left(P{O}_4\right)}_{3}OH$ and $C{a}_5{\left(P{O}_4\right)}_{3}OH$ has to be calculated. 

Concept Introduction:

Solubility Product:

The solubility product constant, $K_{sp}$ is the equilibrium constant for a solid substance dissolving in an aqueous solution.  It represents the level at which a solute dissolves in solution. 

Consider the general dissolution reaction below (in aqueous solutions):

$a{A}_{\left(s\right)}\rightleftarrows c{C}_{\left(aq\right)}+d{D}_{\left(aq\right)}$

The solubility product for the above solid can be written as

$K_{sp}={\left[C\right]}^c{\left[D\right]}^d$

Where,

$\begin{array}{l}\left[C\right]\text{}=ConcentrationofC\\ \\ \left[D\right]=ConcentrationofD\end{array}$

Solubility:

The solubility of a solute in a particular solvent is the maximum concentration that may be achieved under given conditions when the dissolution process is at equilibrium.  It is expressed by the symbol S.  Unit of solubility is g/L.