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In Vander Waal's gas equation (P + (2)/(...

In Vander Waal's gas equation `(P + (2)/(V^(2)))` (V-b) = RT. Determine the dimensions of a and b.

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Since dimensionally similar quantities can only be added
`[P] [(a)/(V^(2))] rArr [a] = [PV^(2)] = [M^(1)L^(5)//T^(-2)]`
[b] = [V] = `[L^(3)]` .
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