Question: The entropy of a perfect crystal at absolute zero is given by:
Options:
R
0
∞
1
Correct Answer: 0
Solution:
According to the third law of thermodynamics, the entropy of a perfect crystal at absolute zero is zero.
The entropy of a perfect crystal at absolute zero is given by:
Practice Questions
Q1
The entropy of a perfect crystal at absolute zero is given by:
R
0
∞
1
Questions & Step-by-Step Solutions
The entropy of a perfect crystal at absolute zero is given by:
Correct Answer: 0
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: Know what a perfect crystal is. A perfect crystal has a completely ordered structure with no defects.
Step 4: Read about the third law of thermodynamics. This law states that as the temperature of a perfect crystal approaches absolute zero, its entropy approaches zero.
Step 5: Conclude that at absolute zero, a perfect crystal has no disorder, so its entropy is zero.
Third Law of Thermodynamics – States that the entropy of a perfect crystal approaches zero as the temperature approaches absolute zero.
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