The van der waals equation is a modified version of the that takes into account both the

The van der Waal's equation is a modified version of the ideal gas law that accounts for the volume of gas molecules and the attractive forces between molecules.

Details:

The ideal gas law is

pV = nRTwherep = gas pressure

V = volume

n = moes

T = temperature

R = the gas constant

The van der Waal equation corrects the volume from V to (V - nb), and corrects p to (p + (n²a) / V²).

b = volume occupied by gas molecules

a and b are determined experimentally.