Chapter 5, Problem 5G.3ST

Interpretation Introduction

Interpretation:

The concentration of ${\text{KNO}}_{\text{3}}$ that results in an increase in the solubility of silver chloride in water to $\text{2}\text{.1}\text{×}{\text{10}}^{\text{-5}}\text{mol}{\text{dm}}^{\text{-3}}$ has to be estimated.

Concept Introduction:

Solubility of a sparingly soluble salt:

  The solubility of a sparingly soluble salt in the presence of a low concentration of a salt that does not provide common ions is given by,

$\begin{array}{l}\text{log}\left({\text{s/c}}^{\text{Θ}}\right)\text{=}\frac{\text{1}}{\text{2}}\text{log}{\text{K}}_{\text{s}}\text{+}\text{A}{\left({\text{C/c}}^{\text{Θ}}\right)}^{\text{1/2}}\\ \text{where,}\\ \text{s}\text{-}\text{solubility}\\ {\text{K}}_{\text{s}}\text{-}\text{solubility}\text{constant}\\ \text{C-}\text{concentration}\text{and}\text{A}\text{-}\text{dimensionless}\text{constant}\text{and}\text{its}\text{value}\text{is}\text{0}\text{.51}\end{array}$