A gas shows $Z = 0.85$ at a certain pressure and temperature. This means that the gas is

Aoccupying a smaller volume than an ideal gas would under these conditions (more compressible)
Boccupying a larger volume than an ideal gas would under these conditions (less compressible)
Cbehaving ideally
Dat its critical point

Answer: A

Z

less than 1 means the actual molar volume is smaller than the ideal molar volume at the same

P

and

T

, because attractions pull the molecules together. The gas has been compressed to a smaller volume than an ideal gas would be, so it is more compressible.

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A gas shows Z=0.85 at a certain pressure and temperature. This means that the gas is

Answer: A

More questions on Deviation from ideal behaviour and compressibility factor

A gas shows $Z = 0.85$ at a certain pressure and temperature. This means that the gas is