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What happens to the entropy of a system when it undergoes a reversible isotherma
What happens to the entropy of a system when it undergoes a reversible isothermal expansion?
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Practice Questions
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Q1
What happens to the entropy of a system when it undergoes a reversible isothermal expansion?
Increases
Decreases
Remains constant
Depends on the gas
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During a reversible isothermal expansion, the entropy of the system increases as the gas expands and does work on the surroundings.
Questions & Step-by-step Solutions
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Q
Q: What happens to the entropy of a system when it undergoes a reversible isothermal expansion?
Solution:
During a reversible isothermal expansion, the entropy of the system increases as the gas expands and does work on the surroundings.
Steps: 5
Show Steps
Step 1: Understand what entropy is. Entropy is a measure of disorder or randomness in a system.
Step 2: Know what a reversible isothermal expansion is. It is a process where a gas expands slowly at a constant temperature.
Step 3: Recognize that during this expansion, the gas molecules move apart, increasing the disorder in the system.
Step 4: Realize that as the gas expands, it does work on the surroundings, which also contributes to the change in entropy.
Step 5: Conclude that because the disorder increases when the gas expands, the entropy of the system increases.
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