A perfectly insulated container of volume V is divided into two equal halves by a partition. One side is under vacuum, while the other side has one mole of an ideal gas (with constant heat capacity) at 298 K. If the partition is broken, the final temperature of the gas in the container___________________?

Question

Accepted Answer

Will be less than 298 K. When the partition breaks, the gas expands into a vacuum (free expansion). This process is adiabatic and involves no work done, causing the internal energy and thus the temperature to drop.