What happens to the entropy of a system when it undergoes a reversible process?

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Question: What happens to the entropy of a system when it undergoes a reversible process?

Options:

Correct Answer: It remains constant

Solution:

In a reversible process, the total entropy of the system and surroundings remains constant.

What happens to the entropy of a system when it undergoes a reversible process?

What happens to the entropy of a system when it undergoes a reversible process?

Step 1: Understand what entropy is. Entropy is a measure of disorder or randomness in a system.
Step 2: Know what a reversible process is. A reversible process is a process that can be reversed without leaving any change in the system and surroundings.
Step 3: Recognize that during a reversible process, the system can exchange energy with its surroundings without increasing the total disorder.
Step 4: Realize that in a reversible process, the total entropy of the system and its surroundings does not change.
Step 5: Conclude that the entropy of the system remains constant during a reversible process.

Entropy in Thermodynamics – Entropy is a measure of the disorder or randomness in a system, and in thermodynamics, it helps to determine the direction of spontaneous processes.
Reversible Processes – A reversible process is an idealized process that can be reversed without leaving any change in the system and surroundings.
Second Law of Thermodynamics – The second law states that the total entropy of an isolated system can never decrease over time, and in reversible processes, the total entropy remains constant.