Thermodynamics
Work Done by Gas
Work done by expanding gas (area under P-V curve).
Variables
WJ
Work
Work done by gas
PPa
Pressure
Gas pressure
dVm³
Volume change
Infinitesimal volume change
Derivation
W = ∫P dV. For constant P: W = PΔV.
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Common questions
What is the Work Done by Gas formula?
Work Done by Gas is written W = ∫P dV. Work done by expanding gas (area under P-V curve). It belongs to Thermodynamics, under First Law.
What are the units in W = ∫P dV?
In SI units, W is work, measured in kg·m²/s²; P is pressure, measured in kg/(m·s²); dV is volume change, measured in m³.
How is the Work Done by Gas formula derived?
W = ∫P dV. For constant P: W = PΔV. The result is W = ∫P dV.