Isothermal Expansion

The expansion or compression of a gas at constant temperature.

ie

The work done on a perfect gas during isothermal expansion is given by

where
W = work done [J]
n = number of moles of gas
R = molar gas constant = 8.31441 JK-1mol-1
T = gas temperature [K]
P1 = pressure before expansion [Nm-2]
P2 = pressure after expansion [Nm-2]
V1 = volume before expansion [m3]
V2 = volume after expansion [m3]

See also: Ideal Gas, Ideal Gas Law, Isothermal Transformation.

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Subjects: Thermodynamics