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The compression factor (compressibility ...

The compression factor (compressibility factor) for `1 mol` of a van der Waals gas at `0^(@)C` and `100 atm` pressure is found to be `0.5`. Assuming that the volume of a gas molecule is neligible, calculate the van der Waals constant `a`.

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The correct Answer is:
1.2544 atmp `L^(2) mol^(-2)`
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