The entropy of a perfect crystalline substance at absolute zero is given by: (2021)
Practice Questions
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Q1
The entropy of a perfect crystalline substance at absolute zero is given by: (2021)
0 J/K
1 J/K
2 J/K
Depends on the substance
According to the third law of thermodynamics, the entropy of a perfect crystalline substance at absolute zero is exactly zero.
Questions & Step-by-step Solutions
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Q: The entropy of a perfect crystalline substance at absolute zero is given by: (2021)
Solution: According to the third law of thermodynamics, the entropy of a perfect crystalline substance at absolute zero is exactly zero.
Steps: 4
Step 1: Understand what entropy is. Entropy is a measure of disorder or randomness in a system.
Step 2: Learn about absolute zero. Absolute zero is the lowest possible temperature, 0 Kelvin, where all molecular motion stops.
Step 3: Familiarize yourself with the third law of thermodynamics. This law states that as the temperature of a perfect crystalline substance approaches absolute zero, its entropy approaches zero.
Step 4: Conclude that at absolute zero, a perfect crystalline substance has no disorder, meaning its entropy is exactly zero.
