Question

If Z represents compressibility factor, then which of the following is a correct statement ?
(a) A gas can easily be liquefied if Z tends to unity (b) A highly liquefiable gas has the value of Z > 1 (e) If the intermolecular force among gas molecules dominate, then the value of Z tends to be less than one (d) If there exists a strong force of repulsion amongst gas molecules, the value of Z is invariably equal to one​

Answer 1

Answer:

Comprasibility factor

In thermodynamics, the compressibility factor (Z), 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. It is a useful thermodynamic property for modifying the ideal gas law to account for the real gas behaviour.[1] In general, deviation from ideal behaviour becomes more significant the closer a gas is to a phase change, the lower the temperature or the larger the pressure.