Chapter 7, Problem 46P

Interpretation Introduction

(a)

Interpretation:

The number of moles of Ar gas at STP and 4.0 L volume needs to be determined.

Concept Introduction:

The ideal gas equation is represented as follows:

  $PV=nRT$

Here, n is number of moles, P is pressure, V is volume, R is Universal gas constant and T is temperature.

In the STP condition the volume occupied by one mole gas = 22.4L

The conversion factor $=\frac{\text{1mol}}{\text{22}\text{.4L}}$

Interpretation Introduction

(b)

Interpretation:

The number of moles of Ar gas at STP and 31.2 L volume needs to be determined.

Concept Introduction:

The ideal gas equation is represented as follows:

  $PV=nRT$

Here, n is number of moles, P is pressure, V is volume, R is Universal gas constant and T is temperature.

In the STP condition the volume occupied by one mole gas = 22.4L

The conversion factor $=\frac{\text{1mol}}{\text{22}\text{.4L}}$

Interpretation Introduction

(c)

Interpretation:

The number of moles of Ar gas at STP and 120.0 mL volume needs to be determined.

Concept Introduction:

The ideal gas equation is represented as follows:

  $PV=nRT$

Here, n is number of moles, P is pressure, V is volume, R is Universal gas constant and T is temperature.

In the STP condition the volume occupied by one mole gas = 22.4L

The conversion factor $=\frac{\text{1mol}}{\text{22}\text{.4L}}$