(b) For given P = 1atm V = 25 litres N=1
using state equation for ideal gas = PV = NRT
T = PV/NR = 1e5*25e-3/8.314 = 300.7 K
(a) Now work done by the gas in an isothermal expansion is given by
W = NRT ln(V1/V0)
Hence,
V0 = V1*exp(-W/NRT) = 25*exp(-3/8.314*300.7) = 24.97 litres
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