Gases possess characteristic critical temperature which depends upon the magnitude of intermolecular forces between the particles. Following are the critical temperatures of some gases.

Gases

H2

He

O2

N2

Critical temperature in Kelvin

33.2

5.3

154.3

126

From the above data what would be the order of liquefaction of these gases? Start writing the order from the gas liquefying first
(i) H_{2},He,O_{2},N_{2}
(ii) He,O_{2},H_{2},N_{2}
(iii) N_{2},O_{2},He,H_{2}
(iv) O_{2},N_{2},H_{2},He

 

Answers (1)

Ans. The answer is the option (iv) O_{2},N_{2},H_{2},He

Explanation: Gas is easily liquified at a higher critical temperature.

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