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Chapter 3: Problem 9

State two energy laws. How do they relate to entropy?

Short Answer

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The First Law of Thermodynamics, or the Law of Conservation of Energy, posits that energy can neither be created nor destroyed, only transferred or transformed. The Second Law of Thermodynamics states that the total entropy of an isolated system can never decrease over time. Entropy is connected to these laws in that the First Law sets up the understanding that energy cannot be completely lost, some of it is distributed in ways that increase entropy. The Second Law directly relates to the concept of entropy in its natural increase, indicating systems will always tend towards maximum entropy.

Step by step solution

01

Understanding the First Law of Thermodynamics

The First Law of Thermodynamics, also known as the Law of Conservation of Energy, determines that energy cannot be created or destroyed, it can only be transferred or changed from one form to another. In a closed system, the total amount of energy remains constant.
02

Understanding the Second Law of Thermodynamics

The Second Law of Thermodynamics states that the total entropy of an isolated system can never decrease over time, and is constant if and only if all processes are reversible. Isolated systems spontaneously evolve towards thermodynamic equilibrium, the state with maximum entropy.
03

Relating Energy Laws to Entropy

The First Law of Thermodynamics relates to entropy as it sets the basic premise that energy cannot be completely lost, some of it gets distributed in ways that increase entropy. The Second Law ties directly to the concept of entropy, as it refers to the natural increase of entropy, meaning systems will always tend towards maximum entropy due to energy dispersion, symbolizing a degree of disorder or randomness.

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