Post 237276 (missing)
(Aurelius: "newbee info", Newbee Forum), and it also seems that good old ethanol is wasted as well.Here is why it happens.
I2 is nonpolar, air is nonpolar, water is polar.
Water doesn't like air or I2.
Air likes I2.
These energetic effects will result in a microscopically thin film of high I2 concentration at the air/water interface. The I2 will then evaporate from there. This microscopic concentrated layer minimizes the free energy of the interface. I hope this made sense.
note: I think it is the free energy that defines interfacial effects, but I could bee mistaken.
Interfacial phenomena is a whole field of science itself. I have taken several graduate level surface chemistry classes and I have a decent feel for how things happen at interfaces.
Having only recently become interested in iodine,
I'm snuffling after it like a rutting dog sniffs the bitch's flanks....
Hoping to get educated
in past overlooked areas of studies..
Foxy: (You duplicitous doe..)
If the solution was being stirred continuously,
under vacuum,
would the evaporation
be better accomplished
with the "plates"
being continuously dispersed?