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Given van der Waals' constant for NH3,H2,O2 and CO2 are respectively 4.17,0.244,1.36 and 3.59, which one of the following gases is most easily liquefied?

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a
NH3
b
H2
c
O2
d
CO2

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detailed solution

Correct option is A

van der Waals' constant 'a' signifies the intermolecular forces of attraction between the particle of gas. So, higher the value of 'a', easier will be the liquefaction of gas.

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