Chapter 10.4, Problem 7RQ

Interpretation Introduction

Interpretation: The term entropy and whether a solid or a gas of a particular compound has higher entropy at the same temperature needs to be determined.

Concept introduction: Thermodynamics is the study of energy. The law of conservation of energy is also called the first law of thermodynamics.The second law of thermodynamics is given as, “The entropy of universe is always increasing”

Answer to Problem 7RQ

Entropy is the measure of the disorder in a system. A solid has higher entropy than the gas compound at the same temperature.

Explanation of Solution

Entropy is the measure of the disorder in a system. A liquid or a solid has a lower entropy than a gas. A gas has a higher entropy, as it consists of randomly spaced, moving particles whereas a solid has particles which are packed next to one another and the particles do not move. A liquid has particles that re close together, but they are slightly further part that allows the particles to move and flow around one another.

Conclusion

The second law of thermodynamics is given as, “The entropy of universe is always increasing”. Entropy is the measure of the disorder in a system.

A liquid or a solid has a lower entropy than a gas.