Chapter 3, Problem 3E.2E

(a)

Interpretation Introduction

Interpretation:

Conditions of temperature and pressures that expect real gases to have $Z<1$ has to be determined.

Concept Introduction:

Real gases have different properties than those of ideal gases. Ideal gases are assumed to have no intermolecular forces between them but such forces exist in real gases. Effect of intermolecular forces can be described by comparison of ideal gas behavior with that of real gases. Compression factor is used to measure deviations in behavior of gases. The expression for compression factor is as follows:

  $Z=\frac{V_{\text{m}}}{V_{\text{m}}^{\text{ideal}}}$

Here,

$Z$ is compression factor.

$V_{\text{m}}$ is actual molar volume of gas.

$V_{\text{m}}^{\text{ideal}}$ is molar volume of ideal gas.

(b)

Interpretation Introduction

Interpretation:

Conditions of temperature and pressures that expect real gases to have $Z>1$ has to be determined.

Concept Introduction:

Refer to part (a).