Chapter 16, Problem 16.16P

(a)

Interpretation Introduction

Interpretation:

The number of moles of ${\text{O}}_{\text{3}}$ in a liter of air of concentration $\text{200}\text{ppb}$ has to be calculated.

Concept Introduction:

Number of moles of ideal gas molecules present in a container is calculated as follows:

    $\text{n=}\frac{\text{PV}}{\text{RT}}$

Here,

$\text{P}$ is pressure of gas.

$\text{V}$ is volume of gas.

$\text{n}$ is moles of gas present.

$\text{R}$ is universal gas constant.

$\text{T}$ is temperature of gas in Kelvin scale.

(b)

Interpretation Introduction

Interpretation:

Whether iodometric procedure is feasible for the detection of ${\text{O}}_{\text{3}}$ of concentration limit $\text{200}\text{ppb}$ has to be explained.

Concept Introduction:

Iodometric titration is a type of titration reaction in which iodides reacts with another oxidizing agent in acidic or neutral medium. As a result of this, iodides are converted to iodine and this formed iodine is back titrated against another standard reducing agent (usually sodium thiosulphate) of known concentration.