Chapter 18, Problem 18.16P

(a)

Interpretation Introduction

Interpretation:

Concentration of $5\text{ mL}$ sample solution has to be calculated.

Concept Introduction:

Formula to calculate moles from mass is given as follows:

  $\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

(b)

Interpretation Introduction

Interpretation:

Concentration of $\text{10 mL}$ sample solution has to be calculated.

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

Molar absorptivity of $\text{10 mL}$ sample solution has to be calculated.

Concept Introduction:

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.