Question

What is meant by compressisbility factor of gases ? What is its value for an ideal gas

Answer 1

The compressibility factor (Z), also known as the compression factor or the gas deviation factor, is a correctionfactor which describes the deviation of a real gas from ideal gas behaviour. ... It is a useful thermodynamic property for modifying the ideal gas law to account for the real gas behaviour.

It may be thought of as the ratio of the actual volume of a real gas to the volume predicted by the ideal gas at the same temperature and pressure as the actual volume. For an ideal gas, Z always has a value of 1.

Answer 2

The compressibility factor, also known as the compression factor or the gas deviation factor, is a correction factor which describes the deviation of a real gas from ideal gas behaviour. It is simply defined as the ratio of the molar volume of a gas to the molar volume of an ideal gas at the same temperature and pressure.