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31/12/2021 3:09 pm
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The van der Waal equation is given as
\((P + \frac{an^2}{V^2})\) (v - nb) = nRT
(a) [atm][m6][mol]-2
(b) [atm]2[m2][mol]2
(c) [atm]3[m3][mol]1
(d) [atm]0
1 Answer
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31/12/2021 3:12 pm
Correct answer: (a) [atm][m6][mol]-2
Explanation:
Since, \((P + \frac{an^2}{V^2})\) is a summation, the component P and \( \frac{an^2}{V^2}\) should have same dimension.
\( \frac{an^2}{V^2}\) = [atm]
\( \frac{a(mol)^2}{(m^3)^2}\) = [atm]
Hence, dimension of ‘a’ has to be [atm][m6][mol]-2