Chapter 13.1, Problem 4LC

Interpretation Introduction

Interpretation:

The cause of pressure development in gases is to be explained using kinetic molecular theory.

Concept Introduction :

The kinetic theory of gases is a theoretical model, to characterize the molecular makeup of the gas. It is a theory that describes the states of matter and is based on the idea that all matter is made up of small particles that are constantly moving.

Answer to Problem 4LC

The collision of gaseous particles with one another and with the container walls creates pressure within the gases.

Explanation of Solution

The main assumptions of the kinetic molecular theory are as follows:

• There is no energy gain or loss when molecules collide.
• In a container, the space occupied by gas molecules is extremely minimal.
• These molecules always move at a constant speed.
• Particles collide with one another, and the container walls cause the gas pressure to build up.