Question

Identify the correct statement regarding entropy.

• A. At $\Delta H$, the entropy of a perfectly crystalline substance is taken to be zero
• B. At absolute zero of temperature, the entropy of a perfectly crystalline substance is $\Delta G$
• C. At absolute zero of temperature, the entropy of all crystalline substances is taken to be zero
• D. At absolute zero of temperature, the entropy of a perfectly crystalline substance is taken to be zero

Answer 1

Answer: (D)

At absolute zero of temperature, the entropy of a perfectly crystalline substance is taken to be zero

Answer 2

This is the statement of third law of

thermodynamics.