Question

why a gas liquify by applying pressure and lowering temperature ​

Answer 1

Answer:

Low temperature and high pressure are required to liquefy gases to liquids. ... Cooling lowers the temperature of compressed gas and helps in liquefying it, Hence, a gas can be liquefied by applying high pressure and lowering the temperature (cooling).

Explanation:

Q. How does pressure or temperature help in liquefaction of gases?

Answer:

Pressure, volume and temperature help in liquefaction of gases. Pressure brings close to molecules of a gas that are far apart from each other. When more and more pressure is applied on gas molecules they come closer to each other so inter molecular forces start producing between gas molecules.