Question

In van der waal equation (p+a/v2)(v_b)=rt what are the constants a and b

Answer 1

Significance of 'a'

•It is known as cohesive force.

•It is the measure of inter molecular force of attraction.

•Greater the value of 'a', greater is the intermolecular force of attraction and easier is the liquifaction of gas.

Significance of' b'

•'b' is the measure of volume occupied by the gas.

•It is known as excluded volume.

•It is 4times greater than the actual volume of gas molecules.