Chapter 18, Problem 18.23P

Interpretation Introduction

Interpretation:

Concentration of iron in original run off has to be calculated.

Concept Introduction:

Dilution formula is given as follows:

  $M_1{V}_1=M_2{V}_2$

$M_1$ denotes molarity of concentrated solution.

$V_1$ denotes volume of concentrated solution.

$M_2$ denotes molarity of diluted solution.

$V_2$ denotes volume of diluted solution.

Expression to compute absorbance as per Beer’s law is as follows:

  $A=\epsilon \cdot b\cdot c$

Here,

$\epsilon$ denotes molar absorptivity of species capable to absorb in ${\text{M}}^{-1}{\text{cm}}^{-1}$.

$b$ denotes path length in centimeters.

$c$ denotes concentration or molarity of species capable to absorb.

$A$ denotes absorbance.

$T$ denotes transmittance.