How can we liquefy a gas Class 9?

The gases can be converted into liquids by bringing their particles closer so atmospheric gases can be liquefied either by decreasing temperature or by increasing pressure. Gas molecules can be squeezed together by one of two methods: by increasing the pressure on the gas or by lowering the temperature of the gas.

What is the easiest way to liquify a gas?

Correct Option: A Low temperature and high pressure set of conditions represents the easiest way to liquefy a gas. Liquefaction of gases is physical conversion of a gas into a liquid state (condensation).

Can real gas be liquefied?

Liquefaction of a gas occurs when its molecules are pushed closed together. A real gas can be liquefied when cooled below critical temperature under application of pressure.

How do we liquefy the gases short answer?

We can liquify gases by applying high pressure and reducing the temperature.

Is it is possible to liquefy atmospheric gases If yes suggest a method?

Answer: In order to liquefy a gas, the constituent particles or molecules have to be brought closer. The atmospheric gases can be liquefied either by increasing pressure or by decreasing temperature.

How is oxygen gas liquefied?

Oxygen is produced by an air separation unit (ASU) through liquefaction of atmospheric air and separation of the oxygen by continuous cryogenic distil- lation. The oxygen is then removed and stored as a cryogenic liquid. The air then passes through heat exchangers where it is cooled to cryogenic temperature.

Can gas be liquefied at critical temperature?

Gases become more difficult to liquefy as the temperature increases because the kinetic energies of the particles that make up the gas also increase. The critical temperature of a substance is the temperature at and above which vapor of the substance cannot be liquefied, no matter how much pressure is applied.

What do you mean by liquefaction of gas?

Liquefaction of gases is physical conversion of a gas into a liquid state (condensation). The liquefaction of gases is a complicated process that uses various compressions and expansions to achieve high pressures and very low temperatures, using, for example, turboexpanders.

What are the two factors required to liquefy gases to liquid?

Low temperature and high pressure are the two main condition for the liquefaction of gases.

Can Air be liquefied?

Air can be liquefied when renewable energy produced is greater than the grid demand; this allows energy to be stored in the form of liquid air instead of being wasted. Liquefaction of air can also be carried out when the energy demand from the grid is low, eg.

How does liquefaction of a gas depend on critical temperature?

The critical temperature signifies the force of attraction between the molecules. The higher the critical temperature, higher is the intermolecular force of attraction and easier is the liquefaction of the gas. Gases require cooling and compression both for liquefaction.