Write the van der Waals equation and explain what each correction term allows for.

The equation is (P + an²/V²)(V − nb) = nRT. The term an²/V² corrects the pressure for the attraction between molecules, which makes the observed pressure lower than ideal. The term nb corrects the volume for the finite size of the molecules, which makes the space available less than the volume of the container.

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Explanation

Both corrections become negligible at low pressure and high temperature.