Question

Which of following is residual entropy of a substance?

Options

• entropy of solid equal to 0 at T = 0

• entropy of solid equal to 0 at T = 273 K

• entropy of solid greater than 0 at T = 273 K

• entropy of solid greater than 0 at T = 0 K

Answer 1

Entropy of solid greater than 0 at T = 0 K

Explanation:

Residual entropy is the difference in entropy between a non-equilibrium state and crystal state of substance close to absolute zero.

⇒ Entropy of solid > 0 at T = 0 K