Which of the following statements about entropy is true?

Question

A. Entropy increases as matter or temperature increases.

B. The entropy of a liquid is greater than the entropy of a solid.

C. The entropy of a gas is greater than the entropy of a liquid.

D. All of the Above

E. None of the Above

For this question I got D. All of the Above Would that be correct?

Answer 1

Yes, that is correct.

Entropy increases with temperature as a rule. If you look at ideal gas laws, entropy scales as ln(T/T0), with T0 being the initial temperature. As long as T is higher than T0, the entropy will increase.

Entropy also increases with degrees of freedom. Solids have a relatively low amount of freedom as they are constrained in place. Liquids, less so, as they are mobile but they do not have full three dimensional freedom. Gases do and, therefore, have the highest entropy.