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The value of van der Waals constant a fo...

The value of van der Waals constant `a` for the gases `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 gas which can most easily be liquefied is

A

`CH_(4)`

B

`N_(2)`

C

`NH_(3)`

D

`O_(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
The ease of lineequation of gases is directly related to the strength of intermolecular attractions . The stronger the attractions , the more easily the gas will be liquefied. The value of constant `a` measures the strength of molecular attractions. Thus , `NH_(3)` with the highest value of `a` is most easily liquefied.
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