aga - 1-8-2014 at 14:39
Er, this may end up being really really silly.
Imagine a reaction where X(s) reacts with Y(g) and makes Z(s).
Z will remain solid at any negative pressure (maybe the flaw already).
Next An inverted Cone. Choose any material that could possibly work.
Reagent X at the bottom of the cone.
Flood the Cone with reagent Y, expelling everything else (apart from the X).
Seal the vessel.
If X + Y all goes to Z(s), what is left in the vessel space ?
A Perfect Vacuum ?
If not, there's some Quantum to do.
macckone - 1-8-2014 at 14:43
This process is actually used in producing vacuum tubes.
The tube is filled with gas and a 'getter'. The tube is filled
with a gas that will react slowly with the 'getter'. The tube
is then vacuumed to a moderately high vacuum. The remaining
gas is removed by the 'getter' over a few days to a week.
aga - 1-8-2014 at 14:50
wow !
a random thought i had actually has applications !
You made my day - thank you.
The fact that it was thought of long before, and applied to a process does nothing to my warm glow.
aga - 1-8-2014 at 15:01
I should add that the reason for an inverted cone would cause all the Z solid to vacate and drop to the bottom, leaving the vacuum space available
for, er, whatever.
Zyklon-A - 1-8-2014 at 17:42
That's interesting, I once did a similar experiment where I oxidized an excess of magnesium with an atmosphere of relatively pure oxygen levels in a
sealed vessel.
When I opened the vessel, a sharp snap was heard as the partial vacuum was was filled with air.
[EDIT] Of course, due to the exothermic nature of that reaction, and the gasses that expand because if it, one should allow the vessel to cool down
before opening.
[Edited on 2-8-2014 by Zyklon-A]