Chapter 19, Problem 19.131P

Interpretation Introduction

Interpretation:

The alkalinity of a water sample that has a $\text{pH}$ of 9.5, $\text{26}\text{.0}\text{mg/L}{\text{CO}}_{\text{3}}^{\text{2-}}$ and $\text{65}\text{.0}\text{mg/L}{\text{HCO}}_{\text{3}}^{\text{-}}$ has to be find out.

Concept Introduction:

Solubility product constant:

The equilibrium constant of a more soluble ionic compound in water at the higher solubility is known as solubility product constant.

The equilibrium constant of more soluble ionic compound is given by ${\text{K}}_{\text{SP}}$ and it is expressed by product of each ion present in the compound which are raised to the power of number respective ion present in the compound to give a maximum solubility of the compound.

$\begin{array}{l}{\text{M}}_{\text{m}}{\text{X}}_{\text{x}}{}_{\text{(s)}}\stackrel{}{\rightleftharpoons }{\text{ mM}}^{\text{n+}}{}_{\text{(aq)}}{\text{ + xX}}^{\text{y-}}{}_{\text{(aq)}}\\ \\ {\text{K}}_{\text{sp}}{\text{ = [M}}^{\text{n+}}{\text{]}}^{\text{m}}{{\text{[X}}^{\text{y-}}\text{]}}^{\text{x}}\end{array}$