Question

The compressibility factor for a real gas at high pressure is ____.

• A.
• B. 1
• C.
• D.

Answer 1

The correct option is C

$⟮P+\frac{a}{V^2}⟯⟮V-b⟯=RTathighpressure\frac{a}{V^2}$ can be neglected

PV - Pb = RT and PV = RT + Pb

$\frac{PV}{RT}=1+\frac{Pb}{RT}$

$Z=1+\frac{Pb}{RT};$ Z>1 at high pressure.