Chapter 5, Problem 5.17P

Interpretation Introduction

Interpretation:

The concentration of original unknown has to be calculated.

Concept Introduction:

The standard addition equation is as follows,

    $\frac{{\left[\text{X}\right]}_{\text{i}}}{{\left[\text{X}\right]}_{\text{f}}+{\left[\text{S}\right]}_{\text{f}}}$

Here, ${\left[\text{X}\right]}_{\text{i}}$ is final concentration of unknown analyte after addition of standard, ${\left[\text{S}\right]}_{\text{f}}$ is final concentration of standard after addition to the unknown, ${\left[\text{X}\right]}_{\text{i}}$ is unknown initial concentration.