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Question

How is liquefaction different from condensation?


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Solution

Liquefaction - It is the process by which a gas is converted to a liquid. There are two main conditions that are required for this process are low temperature and high pressure. Both of these conditions can be applied on the basis of the molecular force of the gas molecules.

For Example- Liquid sulphur dioxide gas (SO2), Liquid chlorine gas (Cl2).

Condensation - This process can be explained as the process through which the physical state of matter changes from the gaseous phase into the liquid phase. There are some conditions that are required for this process to occur- the presence of water vapours in the surrounding, falling temperature and the presence of another object for water vapour to condense around.

For example- It occurs when water vapour (gaseous form) in the air is changed into liquid water when it comes in the contact with a cooler surface.


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