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The entropy of a perfect crystalline substance at absolute zero is given by whic

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Question: The entropy of a perfect crystalline substance at absolute zero is given by which law?

Options:

  1. Third law of thermodynamics
  2. First law of thermodynamics
  3. Second law of thermodynamics
  4. Zeroth law of thermodynamics

Correct Answer: Third law of thermodynamics

Solution: 

The third law of thermodynamics states that the entropy of a perfect crystalline substance approaches zero as the temperature approaches absolute zero.

The entropy of a perfect crystalline substance at absolute zero is given by whic

Practice Questions

Q1
The entropy of a perfect crystalline substance at absolute zero is given by which law?
  1. Third law of thermodynamics
  2. First law of thermodynamics
  3. Second law of thermodynamics
  4. Zeroth law of thermodynamics

Questions & Step-by-Step Solutions

The entropy of a perfect crystalline substance at absolute zero is given by which law?
  • 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.
  • Step 3: Know what a perfect crystalline substance is. A perfect crystalline substance has a highly ordered structure with no defects.
  • Step 4: 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 5: Conclude that the third law of thermodynamics explains the behavior of entropy at absolute zero.
  • Third Law of Thermodynamics – This law states that the entropy of a perfect crystalline substance approaches zero as the temperature approaches absolute zero.
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