Chapter 5, Problem 118E

Interpretation Introduction

Interpretation: The given four gases should be ranked in order of increasing their average kinetic energy and average velocity.

Concept introduction:

• Kinetic molecular theory explains the properties of ideal gas. From the postulates of kinetic molecular theory it is clear that kinetic energy of gas particle is directly proportional to the Kelvin temperature of the gas.

Average kinetic energy of gas can be determined as,  $K{E}_{avg}=\left(3/2\right)RT$

• The average  velocity can be determined,

$C_{ave}={\left(\frac{8RT}{\pi M}\right)}^{1/2}$ (1)

$\begin{array}{l}R=\frac{8.314J}{Kmol}\\ M=Molarmassinkg\end{array}$