Question

Third law of thermodynamics states that the :

• A. heat transfer from low temperature to high temperature source is not possible without external work.
• B. entropy of a crystalline solid is zero at absolute zero temperature.
• C. gases having same reduced properties behave similarly.
• D. none of these

Answer 1

Answer: (B)

entropy of a crystalline solid is zero at absolute zero temperature.

The third law of thermodynamics is sometimes stated as follows, regarding the properties of systems in equilibrium at absolute zero temperature: The entropy of a perfect crystal at absolute zero is exactly equal to zero.