Chapter 15.7, Problem 5TY

Interpretation Introduction

Interpretation:

The concentration of the EDTA in the buffer has to be calculated.

Concept Introduction:-

Metal ion buffer:

A metal-ion buffer gives a controlled source of free metal ions in a way related to the regulation of hydrogen ion concentration by a pH buffer. A metal-ion buffer solution has the free (hydrated) metal ion along with a complex compound made by the association of the ion with a ligand in excess. The concentration of free metal ion mainly depends on the total concentration of each component (ligand and metal ion) and also on the stability constant of the complex. The concentration of the free metal ion depends upon on solution pH if the ligand can undergo protonation.

Concentration= $\frac{\left[\text{ML}\right]}{\left[\text{M}\right]\left[\text{L}\right]}$