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For one mole of a van der Waals’ gas whe...

For one mole of a van der Waals’ gas when b = 0and T =300 K, the pV vs. 1/V plot is shown below. The value of the van der Waals’ constant a (atm L `mol^(-2)`) is

A

1

B

4.5

C

1.5

D

3

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