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The values of van der Waals' constant 'a...

The values of van der Waals' constant 'a' for `O_2, N_2, NH_3 " and " CH_4 " are " 1.360, 1.390, 4.170 " and " 2.253 L^2 " atm " mol^(-2)` respectively. The most easily liquefiable gas among these is

A

`O_(2)`

B

`N_(2)`

C

`NH_(3)`

D

`CH_(4)`

Text Solution

Verified by Experts

The correct Answer is:
C
The ease of liquefication of a gas depends on their intermolecular force of attraction which in turn is measured in terms of van der Waals’ constant a. Hence, higher the value of a, greater the intermolecular force of attraction, easier the liquefication.
In the present case, has highest a, can most easily be liquefied.
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