Question

Two van der Waals' gases have the same value of 'b' but different values of 'a', then which of the following statement is correct under similar conditions?

• A. Both gases will occupy same volume
• B. Gas having a larger value of 'a' will occupy less volume
• C. Gas having a larger value of 'a' will occupy larger volume
• D. Cannot be predicted

Answer 1

The correct option is B Gas having a larger value of 'a' will occupy less volume

The van der Waals' constant "a" represents the strength of the attractive forces between the particles.Greater the value of "a" for a gas means that it is more compressible when compared to another one with a lesser value of "a".

Hence, the gas having a larger value of 'a' will occupy less volume.