Chapter 14, Problem 75A

Interpretation Introduction

Interpretation: According to the kinetic theory, the compressibility of gases is to be explained.

Concept introduction: The compressibility of gases is measured by the ratio of the molar volume of one gas to the molar volume of another gas when both gases are subjected to identical pressure and temperature conditions.

Answer to Problem 75A

Kinetic theory explains the differences between solids, liquids, and gases at the molecular level. There is no change in volume when a solid or liquid is compressed. However, gases are compressible because most of the volume of a gas is in space between the gas particles.

Explanation of Solution

The kinetic theory explains the molecular differences that exist between solids, liquids, and gases. No change in volume occurs when pressing a solid or liquid, although gases can be compressed. Therefore, gases can be compressed since most of the gas volume consists of a significant amount of space between the gas particles.

Conclusion

Kinetic theory explains the differences between solids, liquids, and gases at the molecular level. There is no change in volume when a solid or liquid is compressed. However, gases are compressible because most of the volume of a gas is space between the gas particles.