Chapter 3, Problem 3.40E

(a)

Interpretation Introduction

Interpretation:

The substance among the pair which has larger van der walls parameter (a) has to be given.

Concept Introduction:

Van der walls equation:

Van der walls equation is required for special cases such as non ideal gases which is used to calculate an actual value.  The equation is,

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

Where V refers to the volume of the gas.

n refers to the moles of gas.

a is a specific value of a particular gas.

b is volume of gas molecules.

R is the gas constant.

(b)

Interpretation Introduction

Interpretation:

The substance among the pair which has larger van der walls parameter (b) has to be given.

Concept Introduction:

Refer to part (a).