Statement-1: Excluded volume or co-volume equals to (V-nb) for n moles gas.
Statement-2: co-volume depends on the effective size of gas molecules.

Does co-volume represent the actual volume of the molecules in a gas ?

The van der Waals constant b is realted to the volume occupied by the molecules of a gas. It is known as the excluded volume by the molecules of a gas. It is known as the excluded volume or noncompressible volume of the gas. It is equal to ……… times the actual volume of one mole of gas molecules.

The excluded volume (b) is = 4 (volume of one gas molecule)

Excluded volume for free random motion of gas molecules is how many times the actual volume of gas molecules

Why excluded volume v is four times the actual volume of molecules?

The relation, volume of gas (V) prop no. of moles (n), is

The ratio of excluded volume ( b ) to molar volume of a gas molecule is

The ratio of excluded volume ( b ) to molar volume of a gas molecule is