A gas expands from volume V1 to V2 at constant pressure P. What is the work done
Practice Questions
Q1
A gas expands from volume V1 to V2 at constant pressure P. What is the work done by the gas? (2022)
P(V2 - V1)
P(V1 + V2)
P(V1 * V2)
P(V1 - V2)
Questions & Step-by-Step Solutions
A gas expands from volume V1 to V2 at constant pressure P. What is the work done by the gas? (2022)
Step 1: Identify the initial volume of the gas, which is V1.
Step 2: Identify the final volume of the gas, which is V2.
Step 3: Calculate the change in volume (ΔV) by subtracting the initial volume from the final volume: ΔV = V2 - V1.
Step 4: Identify the constant pressure at which the gas expands, which is P.
Step 5: Use the formula for work done by the gas: W = P * ΔV.
Step 6: Substitute ΔV from Step 3 into the formula: W = P * (V2 - V1).
Work Done by a Gas – The work done by a gas during expansion or compression at constant pressure is calculated using the formula W = P * ΔV, where ΔV is the change in volume.
Constant Pressure Process – In a constant pressure process, the pressure remains unchanged while the volume changes, which simplifies the calculation of work done.
