Explain Briefly how Gases Can be Liquified

Q. Explain briefly how gases can be liquified?

By applying high pressure and lowering the temperature, gases can be liquefied.

Now let’s see how gases can be liquefied; lowering the temperature reduces the kinetic energy of gas molecules, and raising the pressure reduces the distance between these particles. Hence, these effects drive the molecules to move closer together, increasing the intermolecular force of attraction. Gases can then be liquified as a result.

In Simple words, Critical temperature and critical pressure are two crucial parameters of gases to consider while constructing liquefaction processes. A gas’s critical temperature is the temperature at or beyond which no amount of pressure, no matter how high, would cause it to liquefy. The critical pressure is the lowest pressure needed to liquefy a gas at its critical temperature.

The liquefaction of gases is also crucial in the realm of cryogenics research. The study of matter’s behaviour at temperatures near absolute zero, 0K (— 459°F [— 273°C]) is commonly done with liquid helium.

The Benefit of liquefying gases:

The main benefit of liquefying gases is that they may be stored and transported in a much more compact form than when they are gaseous. Liquefied natural gas (LNG) and liquefied petroleum gas (LPG) are two types of liquefied gases that are frequently used commercially for this purpose (LPG). 

LPG is a mixture of gases that have been converted into a liquid condition from natural gas or petroleum. The combination is kept in heavy-duty containers that can sustain extremely high pressures. LPG is utilised as a fuel in motor homes, boats, and dwellings where other fuel types are unavailable.