Chapter 12.7, Problem 5TY

Interpretation Introduction

Interpretation:

The concentration of original ${\text{Ni}}^{\text{2+}}$ solution should be calculated, when back titration required $\text{13}{\text{.00 mL Zn}}^{\text{2+}}$ solution.

Concept Information:

Back titration:

Back titration is a one of the titration method, which is find the excess of $\text{EDTA}$ present in solution by known second metal solution.

In the $\text{EDTA}$ titrations, metal ion slowly react with $\text{EDTA}$, metal get precipitate the absence of $\text{EDTA}$, it block the indicator are will happen so the titration may get error. In this time back titration is used to avoid these type of errors.