van der Waals Equation ((P + an²/V²)(V − nb) = nRT)

jee-mainjee-advancedneet-ug

(P + an²/V²)(V − nb) = nRT

What each symbol means

SymbolWhat it stands for
aAttraction correction (Pa·m⁶·mol⁻² or compatible)
bExcluded volume per mole (m³·mol⁻¹)
P,V,n,T,RUsual

When to use this

Real gas two-parameter model; molar form (P+a/Vm²)(Vm−b)=RT for n=1.