Condensation

Question 1

Condensation

Answer 1

conversion of gaseous substance into liquid state. opposite of evaporation.

Question 2

Ways to perform condensation -

Answer 2

1. Cooling the gas below a certain temperature

2. Application of pressure

Question 3

Molecular arrangement and energy changes during condensation

Answer 3

When heat is extracted > 
K.E of molecules decreases > 
temperature falls > 
reaches a sufficient temperature > 
further extraction of heat from gas > 
instead of K.E, it reduces P.E > 
this causes intermolecular forces of attraction to increase >
brings molecules together >
at this point it turns from l -> g .

Question 4

Liquefaction

Answer 4

The gases have to be cooled below a certain temperature and then subjected to application of high pressure.

Question 5

Critical temperature

Answer 5

The minimum temperature above which the gas cannot be liquefied on applying pressure.