Question

Five moles of an ideal gas at 1 bar and 298K are expanded into a vacuum to double the volume. The work done is:

a. Zero
b. Positive
c. Negative
d. Cannot be determined

Answer 1

The work done by the gas is zero.

Step-by-step explanation:

The work done by the gas can be determined using the formula:

Work = -P&DeltaV

Where:

• P is the pressure of the gas,
• ΔV is the change in volume of the gas.

In this case, the gas is expanding into a vacuum, which means the pressure is zero. Therefore, the work done by the gas is zero.