Chapter 12, Problem 12.27P

Interpretation Introduction

Interpretation:

The three circumstances for conducting $\text{EDTA}$ back titration should be given.

Concept introduction:

Back titration:

In the estimation of metal ions by $\text{EDTA}$ titration, the known titrant $\text{EDTA}$ is added excessively then the excess of $\text{EDTA}$ is treated with known amount of another titrant to give a result of amount of $\text{EDTA}$ consumed in the analyte. From this result, the value of analyte present in the solution was calculated. These method of estimation is known as a back titration.