Talk:Virial coefficient

Cross virial coefficients

What about cross virial coefficients? 128.12.20.32 21:16, 20 February 2006 (UTC)

Ref on this topic: Witold Warowny, The second cross virial coefficients of gaseous mixtures, PWN - Polish Scientific Publishers, 1979--193.231.19.53 (talk) 11:04, 21 October 2013 (UTC)

Journal articles (J Chem Phys) on mixtures virial coefficients--193.231.19.53 (talk) 11:52, 7 January 2014 (UTC)

Compressibility factor and virial coefficients - relation to intermolecular forces

from usertalk Dirac66 : Regarding the insight on intermolecular forces, some more details regarding the relation of intermolecular forces to virial coefficients would be useful. --188.26.22.131 (talk) 10:04, 17 July 2013 (UTC)

They probably would be useful, if you want to try to find the information in a textbook. Dirac66 (talk) 01:52, 18 July 2013 (UTC)

It seems that there are inconsistencies between various sources/textbooks regarding this topic.Some give the next formula for compressibility factor and others for the second virial coefficient:

$Z=1+2\pi {\frac {N_{A}}{V_{M}}}\int _{0}^{\infty }(1-exp({{\frac {\varphi }{kT}}))r^{2}dr}$

or

$B=1+2\pi {\frac {N_{A}}{V_{M}}}\int _{0}^{\infty }(1-exp({{\frac {\varphi }{kT}}))r^{2}dr}$

where varphi is the potential of the forces.

Which one holds?--188.26.22.131 (talk) 14:51, 19 July 2013 (UTC)

There is clearly an error in the second formula because the second virial coefficient which is usually written B₂ should have dimensions of volume. The first one may be right if you have found it in reliable sources - I am not an expert in this. Dirac66 (talk) 01:29, 20 July 2013 (UTC)

Thanks for your answer. Do you happen to know some wikieditor who has an expertise in this topic?--188.26.22.131 (talk) 09:55, 23 July 2013 (UTC)

Why don't you believe the present article? It says:

$B_{2}=-2\pi \int _{0}^{\infty }r^{2}{\big (}\exp({{\frac {\varphi }{kT}})-1{\big )}dr}$

(Dimension volume)

--P.wormer (talk) 08:42, 7 January 2014 (UTC)

Startups

I came here expecting to hear about the concept in startup methodology. Needs more non-physics! GreenReaper (talk) 20:18, 4 June 2014 (UTC)