Two 6.5 L flasks are joined by a 150 mL tube with a stop cock. If 0.25 moles of nitrogen are held in the left flask and the right flask is empty, what happens to the entropy of the system upon opening the valve between the flasks?
A) The entropy increases.
B) The entropy remains the same.
C) The entropy decreases.
D) There is too little information to assess the change.

Question

Quizplus · Accepted Answer

Opening the valve allows the nitrogen gas to spread out from the left flask into both flasks, increasing the disorder of the system, which results in an increase in entropy.

Two 65 L Flasks Are Joined by a 150 ML Tube