Question

Van der waals equation constants dimension

Answer 1

Since the van der Waals equation is derived from the ideal gas equation, the empirical constants a and b need to have dimensions so that the units work out. The ideal gas constant R has dimensions of pressure⋅volumemoles⋅temperature since R=pVnT for an ideal gas. This is one of the definitions of R.

Answer 2

➡Since the van der Waals equation is derived from the ideal gas equation, the empirical constants a and b need to have dimensions so that the units work out.

➡The ideal gas constant R has dimensions of pressure⋅

➡volumemoles⋅temperature since R=pVnT for an ideal gas. This is one of the definitions of R.

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