where Z is the compressibility factor. The fugacity coefficient of a real gas governed by equations of state, $\mathrm{P}(\mathrm{V} -\mathrm{b})=\mathrm{RT}$ with'b'a constant is given by
(a)$\frac{RT}{bP}$
(b)$e^{\frac{RT}{bP}}$
(c)$\frac{bP}{RT}$
(d)$e^{\frac{bP}{RT}}$
Answer
Answer: D ✓ checked by 4AB · confidence high
Explanation
Z − 1 = bP/RT, so ln φ = ∫₀ᴾ (b/RT)dP′ = bP/RT and φ = e^(bP/RT) (d).