Recent content by Kazys

To PeterDonis Thank you for your comments. Re, the question - Can you give any examples of a mainstream reference assuming that the liquid phase has a Maxwellian distribution? And can you give mainstream references that show why that assumption is not correct? A number can be quoted, a good...

To: Nugatory My sincere apologies, a typo. It was meant to be "do NOT act etc", Re. your question of sources for H-bond strength, I am reluctant to quote a single one, the Wikipeda entry on "Hydorgen bond of water" provides the data and a selection of sources.

To: CWaters Thank you very much for this reference. Knowledge exists at several levels of certitude. Knowledge obtained by using simulations of virtual models, as is the case in the noted study, is valuable, however it depends on the accuracy of the virtual model and the simulation process...

To PeterDonis It seems that I started this post improperly, for this I apologize. My intention was to illustrate that some common and very familiar phenomena are still not completely understood. The evaporation of water is an example. Water in the liquid phase is a very complex medium. The...

It is an A level question because it has not been answered. Not just by you and me, by anybody. Your answer just restates the question in other words. Yes, indeed, some molecules do gain sufficient energy to escape, that is clear from the first stated condition -water does evaporate. But...

Some facts: Water does evaporate. The average kinetic energy of a water molecule at 373 K is ~0.03 eV The average strength of the H bond is ~0.24 eV In the liquid phase the average H2O molecule is bound by 2 to 4 H bonds...

Thank you for the references. They deal with rather specific issues of this general question. I would like to reframe it in more simple terms. A Maxwellian distribution results when freely moving particles interact elastically. The question can be posed as follows - is the evaporation of an...

What is the velocity distribution of evaporating H2O molecules? It can not be Maxwellian.

My answer is simplistic, and because of that chances are that it is correct. Consider the Ne cloud before its free expansion. Within the could the molecules interact, the probability is that fast ones loose energy, slow ones gain it. Equilibrium is maintained. At the edges the fast...

"Free"expansion? How do you define volume for such a condition? PV = MRT is then not valid. The Maxwell-Boltzman distribution is not valid either. Let's assume the expansion of a Ne gas volume starts from an initial equilibrium state. At say 20 C the Ne atoms have an average velocity of...