Chapter 6, Problem 6.127QP

Interpretation Introduction

Interpretation: The gas ${\text{O}}_{\text{2}}$ from the three given gases $\text{A},\text{B}$ and $\text{C}$ is to be identified.

Concept introduction: The root-mean-square speed is used to find out the single value of speed of the gas molecules that move in random directions having different speed and the formula is,

$v_{rms}=\sqrt{\frac{3\text{R}T}{M}}$

According to kinetic theory of molecular gases, gases are hitting continuously against the walls of container when the temperature increases. Hence their total energy also increases.

$\text{K}\text{.E}=\frac{1}{2}m{v}^2$

To determine: The gas ${\text{O}}_{\text{2}}$ from the three given gases $\text{A},\text{B}$ and $\text{C}$.