In thermodynamics, the 𝑃 − 𝑉 work done is given by
$$w = - \int_{}^{} dV P_{ext}$$.
For a system undergoing a particular process, the work done is,
$$w = − \int_{}^{} dV \left(\frac{𝑅𝑇}{V - b} - \frac{a}{V^{2}}\right)$$
This equation is applicable to a

A

system that satisfies the van der Waals equation of state.

B

process that is reversible and isothermal.

C

process that is reversible and adiabatic.

D

process that is irreversible and at constant pressure