Q. The compressibility factor (Z) for an ideal gas is:
एक आदर्श गैस के लिए संपीड्यता कारक (Z) है:
Explanation
The compressibility factor Z is defined as:
Z = PV/(nRT)
For an ideal gas:
- PV = nRT (ideal gas equation)
- Therefore: Z = PV/(nRT) = 1
Physical meaning:
- Z = 1: Ideal behavior
- Z > 1: Gas is less compressible than ideal (repulsive forces dominate)
- Z < 1: Gas is more compressible than ideal (attractive forces dominate)
Real gases:
- Z deviates from 1 due to intermolecular forces and molecular volume
- At high T and low P, Z approaches 1 for all gases
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