Which statement concerning the van der Waals constants a and b is true? (a) The magnitude of

Question:

Which statement concerning the van der Waals constants a and b is true?
(a) The magnitude of a relates to molecular volume, whereas b relates to attractions between molecules.
(b) The magnitude of a relates to attractions between molecules, whereas b relates to molecular volume.
(c) The magnitudes of a and b depend on pressure.
(d) The magnitudes of a and b depend on temperature.

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