Chapter 12, Problem 67AE

(a)

Interpretation Introduction

Interpretation:

Gas with greater density in pairs below has to be determined.

Concept Introduction:

Density of gas represents mass of gas present in unit volume. Expression of density is as follows:

  $d\left(\text{g/L}\right)=\frac{\text{mass}\left(\text{g}\right)}{\text{volume}\left(\text{L}\right)}$

Here, $d$ is density of gas.

Ideal gas law represented as equation to relate its volume and pressure with its temperature. Expression for ideal gas equation is as follows:

  $PV=nRT$

Here,

$P$ is pressure of the gas.

$V$ is volume of gas.

$n$ denotes moles of gas.

$R$ is gas constant.

$T$ is temperature of gas.

Modified ideal gas equation for expression of density is as follows:

  $\text{Density}\left(g\text{/}V\right)=\frac{MP}{RT}$

Here,

$M$ is molar mass of gas.

$g$ is grams of gas.

(b)

Interpretation Introduction

Interpretation:

Gas with greater density in pairs below has to be determined.

Concept Introduction:

Refer to part (a).