Chapter 3, Problem 3E.4E

(a)

Interpretation Introduction

Interpretation:

Flask with molecules that has greater collision rate with walls of container has to be determined.

Concept Introduction:

Rate of collisions depends on size of molecules. Smaller molecules will have higher kinetic energy than larger ones and therefore these collide with walls of container at greater pace and vice-versa.

(b)

Interpretation Introduction

Interpretation:

Whether pressure is higher or lower than expected from ideal gas laws for each flask has to be determined.

Concept Introduction:

Real gases consist of atoms or molecules that have intermolecular attractions as well as repulsions. These gases deviate from ideal gases in terms of intermolecular forces. Such gases obey van der Waals equation. Van der Waals equation is as follows:

  $\left(P+a\frac{n^2}{V^2}\right)\left(V-nb\right)=nRT$

Here,

$P$ is pressure of gas.

$V$ is volume of gas.

$T$ is absolute temperature of gas.

$R$ is universal gas constant.

$n$ is number of moles of gas.

$a$ and $b$ are van der Waals parameters.