When Z 1 Compressibility Factor?

The compressibility factor Z is defined as the ratio of the actual volume to the volume predicted by the ideal gas law at a given temperature and pressure. If the gas behaves like an ideal gas, Z =1 at all temperatures and pressures.

Can the compressibility factor be greater than 1?

Due to repulsion the actual volume of the hydrogen and helium gas is greater than the volume of an ideal gas. So, the value of the compressibility factor for hydrogen and helium is greater than one. So, hydrogen and helium both have a compressibility factor greater than one at critical condition.

What does it mean when the compressibility factor Z 1?

The compressibility factor, as mentioned earlier, may also be expressed as: There are three regimes that affect the compressibility factor: the value of Z tends toward 1 as the gas pressure approaches 0, where all gases tend toward ideal behavior.