The unit of Vander Waals constant 'a' in SI units is____.

P a t m^{5} m o l^{- 2}

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P a t m^{6} m o l^{- 1}

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P a t m^{6} m o l^{- 3}

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P a t m^{6} m o l^{- 2}

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Solution

The correct option is C $P a t m^{6} m o l^{- 2}$
The unit of Vander Waals constant 'a' in SI units is $P a m^{6} m o l^{- 2}$ .
$a = \frac{P \times V^{2}}{n^{2}} = \frac{P r s s u r e \times (v o l u m e)^{2}}{(M o l e s)^{2}}$

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