Question

Which statement is true of a process in which one mole of a gas is expanded from state a to state b?

1) It is not possible to have more than one path for a change of state.
2) The final volume of the gas will depend on the path taken.
3) When the gas expands from state a to state b, the surroundings are doing work on the system.
4) The amount of work done in the process must be the same, regardless of the path.
5) The amount of heat released in the process will depend on the path taken.

Answer 1

During the expansion process of a gas, the surroundings are doing work on the system.

Step-by-step explanation:

The statement that is true of a process in which one mole of a gas is expanded from state a to state b is: 3) When the gas expands from state a to state b, the surroundings are doing work on the system.

During the expansion process, the gas does work on the surroundings. This can be understood by considering the change in volume of the gas. When the gas expands, it pushes against the external pressure, thereby doing work on the surroundings.