Chapter 13, Problem 13.19P

(a)

Interpretation Introduction

Interpretation:

Conditional formation constant for $\text{Mg}{\left(\text{EDTA}\right)}^{2-}$ at $\text{pH 9}\text{.00}$ has to be determined.

Concept Introduction:

Conditional formation constant comes into play if effects of side chemical reactions are to be considered on assessment of ligand power to form complexes. It is denoted by $K_{\text{f}}^{\text{'}}$.

(b)

Interpretation Introduction

Interpretation:

Concentration of free ${\text{Mg}}^{2+}$ at $\text{pH 9}\text{.00}$ in $0.050{\text{ M Na}}_2\left[\text{Mg}\left(\text{EDTA}\right)\right]$ has to be determined.

Concept Introduction:

EDTA or ethylenediaminetetraacetic acid is used for titration of majority of metals with help of formation of strong metal complexes in the ratio of $1:1$. It is utilized to bind metals, most commonly used in industrial processes. It is also used for prevention of food oxidation and in environmental chemistry.