Q. The deuiation from the ideal gas behaviour of a gas can be expressed as
A) $Z = \frac{p}{VRT}$
B) $Z = \frac{pV}{nRT}$
C) $Z = \frac{nRT}{pV}$
D) $Z = \frac{VR}{pT}$
Explanation
(b)
According to ideal gas equation
$\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ pV = nRT$
$n =$ number of moles of gas
$then,\ \ \frac{pV}{nRT} = 1$
Therefore, the compressibility factor
$\ \ \ \ \ \ \ \ \ \ \ Z = \frac{pV}{nRT} = 1$
For an ideal gas. For real gas $Z$ may be either greater than one or less than one.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.