Which law states that the entropy of a perfect crystal approaches zero as the temperature approaches absolute zero?
Practice Questions
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Which law states that the entropy of a perfect crystal approaches zero as the temperature approaches absolute zero?
Zeroth law of thermodynamics
First law of thermodynamics
Second law of thermodynamics
Third law of thermodynamics
The Third law of thermodynamics states that the entropy of a perfect crystal approaches zero as the temperature approaches absolute zero.
Questions & Step-by-step Solutions
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Q
Q: Which law states that the entropy of a perfect crystal approaches zero as the temperature approaches absolute zero?
Solution: The Third law of thermodynamics states that the entropy of a perfect crystal approaches zero as the temperature approaches absolute zero.
Steps: 5
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, where all molecular motion stops, and it is 0 Kelvin or -273.15 degrees Celsius.
Step 3: Know what a perfect crystal is. A perfect crystal is a solid where the atoms are arranged in a highly ordered structure.
Step 4: Connect the concepts. The Third Law of Thermodynamics tells us that as we cool a perfect crystal down to absolute zero, its disorder (entropy) decreases.
Step 5: Conclude that at absolute zero, a perfect crystal has no disorder, meaning its entropy approaches zero.
