The reversible work per mol done, Wrev, to expand a fuid from a molar volume

V1 to a molar volume V2 is given by

Where P the the pressure of the fluid at a volume V.

Calculate Wrev when

**a)** - - i.e. an ideal gas. Assume that the temperature, T, is constant

(i.e. an isothermal expansion).

**b)** and K,

are constants. Adiabatic expansion of an ideal gas. For information's sake

where where Cp and Cv are the heat capacities at constant pressure and volume respectively.

**c)** - van der Waals equation of state with a and b constants,

assume that the temperature T is constant.