Question

The compressibility factor for an ideal gas is:

• A. 1.5
• B. 1.0
• C. 2.0
• D. ∞

Answer 1

The correct option is B

1.0

The compressibility factor (Z), is the ratio of the molar volume of a gas to the molar volume of an ideal gas at the same temperature and pressure. Deviation of a real gas from an ideal behaviour is expressed in terms of compressibility factor (Z), mathematically expressed as $\frac{PV}{nRT}$. For an ideal gases, Z = 1, PV = nRT.