This is in regards to an exam question that I did not understand and got wrong.
The question was: When you heat acetone from 200 K to 400 K, what happens to the entropy? Answers: Increases, decreases, more info needed
I put more info needed, but this was incorrect. My logic was that if you have a sealed container completely filled with acetone (there is no gas or empty space in the container) and you heat it, there are no new states that the liquid particles can occupy so there is no change in entropy. Is this reasoning incorrect?