Chapter 15, Problem 15.144MP

Interpretation Introduction

Interpretation:

A saturated solution of an ionic salt MX exhibits an osmotic pressure of 74.4 mmHg at ${25}^{0}C$. Assuming that MX is completely dissociated in solution, the value of its $K_{sp}$ should be determined.

Concept introduction:

Ideal gas equation shows the relationship between pressure, volume, temperature and the amount of gas in moles.

$PV=nRT$

$\begin{array}{l}Concentration=\frac{n}{V}\\ nistheamountofsubs\tan ceinmole\\ Visthevolume\end{array}$

Solubility product $K_{sp}$ is the mathematical product of its dissolved ion concentration raised to the power of their stoichiometric coefficients.

$\begin{array}{l}{A}_x{B}_y\stackrel{}{\rightleftarrows }x{A}_{\left(aq\right)}^{y^{+}}+y{B}_{\left(aq\right)}^{x^{-}}\\ K_{sp}={\left[A^{y+}\right]}^x{\left[B^{x-}\right]}^y\end{array}$