Chapter 22, Problem 22.30P

(a)

Interpretation Introduction

Interpretation:

The mean free path of the given molecule has to be determined.

Concept and introduction:

Mean free path:

• The average distance traveled by a moving atom or a molecule between successive impacts or collisions is said to be mean free path.
• It can affects the direction or energy or properties of the respective particle.
• The mean path can be determined by using the following formula.

  $\lambda =\frac{kT}{\sqrt{2\sigma P}}$

Where,

$\begin{array}{l}\lambda =\text{Mean free path}\\ k=\text{Boltzmann's}\text{constant}\\ T=\text{Temperature (K)}\\ \sigma =\text{collision}\text{cross}\text{section}\\ P=\text{pressure}\text{(Pa)}\end{array}$

(b)

Interpretation Introduction

Interpretation:

The mean free path of the given molecule has to be determined.

Concept and introduction:

Mean free path:

• The average distance traveled by a moving atom or a molecule between successive impacts or collisions is said to be mean free path.
• It can affects the direction or energy or properties of the respective particle.

  $\lambda =\frac{kT}{\sqrt{2\sigma P}}$

Where,

$\begin{array}{l}\lambda =\text{Mean free path}\\ k=\text{Boltzmann's}\text{constant}\\ T=\text{Temperature (K)}\\ \sigma =\text{collision}\text{cross}\text{section}\\ P=\text{pressure}\text{(Pa)}\end{array}$