States of Matter - Result Question 14

####14. The term that corrects for the attractive forces present in a real gas in the van der Waals’ equation is

(2009)

(a) nb

(b) n2a/V2

(c) (n2a/V2)

(d) nb

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Solution:

  1. In the van der Waals’ equation

(p+n2aV2)(Vnb)=nRT

The additional factor in pressure, i.e. n2aV2 corrects for intermolecular force while b corrects for molecular volume.



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