Question

The compressibility factor of a gas at its critical points

Answer 1

Answer:

For an ideal gas, Z always has a value of For real gases, the value may deviate positively or negatively, depending on the effect of the intermolecular forces of the gas. The closer a real gas is to its critical point or to its saturation point, the larger are the deviations of the gas from ideal behavior

Answer 2

Answer:

As for the compressibility of gases, the principle of corresponding states indicates that any pure gas at the same reduced temperature, Tr, and reduced pressure, Pr, should have the same compressibility factor. Tc and Pc are known as the critical temperature and critical pressure of a gas.