"A spontaneous change is always accompanied by an increase in entropy." The entropy change referred to in this statement is:

Question

Quizplus · Accepted Answer

The entropy change referred to in the statement is the change in entropy of the universe (system plus surroundings), which is represented by D S _universe. This is because a spontaneous change (one that occurs without any external influence or intervention) will always result in an increase in the entropy of the universe.

"A Spontaneous Change Is Always Accompanied by an Increase in Entropy