Chapter 20, Problem 20.16P

Interpretation Introduction

Interpretation:

Morality of $\left[\text{Fe}\right]$ in unknown solution has to be calculated.

Concept Introduction:

Formula to compute response factor is as follows:

  $\frac{A_{\text{X}}}{\left[\text{X}\right]}=F\left(\frac{A_{\text{S}}}{\left[\text{S}\right]}\right)$

Here,

$F$ denotes response factor.

$A_{\text{S}}$ denotes signal due to standard.

$A_{\text{X}}$ denotes signal due to analyte in unknown.

Formula to calculate ${\left[\text{S}\right]}_{\text{final}}$ in diluted solution is as follows:

  ${\left[\text{S}\right]}_{\text{final}}={\left[\text{S}\right]}_{\text{intial}}\left(\frac{V_{\text{S}}}{V}\right)$

Here,

$V$ is total volume obtained from sum of $V_{\text{S}}$ and $V_{\text{0}}$.

${\left[\text{S}\right]}_{\text{intial}}$ denotes initial concentration of standard.

${\left[\text{S}\right]}_{\text{final}}$ denotes final concentration of standard after unknown addition.