Question

In van der Waal's equation of state of the gas law the constant
'b' is a measure of



a. intermolecular repulsion


b. intermolecular attraction


c. volume occupied by the molecules


d. intermolecular collisions per unit volume

Answer 1

Ans: c.
'b' in Van der waal's equation is measurer of excluded volume. Mathematically,
b = 4NV
where N is Avogadro Number and V is volume of the atom.

While on the other hand, 'a' measures the forces of attraction between molecules.