Which statement is correct?
A) The standard entropy of a gas phase substance is less than the standard entropy of the same substance in the solid phase.
B) For two different substances in the same phase, the substance with the more complex structure has the lower entropy.
C) The more highly ordered allotrope of an element has a higher entropy.
D) The entropies of elements and compounds are always positive.
E) For a monatomic gas, the gas with the lower molar mass has the greater entropy.

Question

Quizplus · Accepted Answer

Entropy is a measure of the disorder or randomness in a system. The entropies of elements and compounds are always positive because there is always some degree of disorder in a system, even at absolute zero.

Which Statement Is Correct