Quote:
Originally Posted by AndyG  You can always count on Luc for the chemistry of cooking  But I still say water will evaporate, not just outgas, at room temp. and with a pressure about 0.1% of atmosphere. |
I am writing this with a grin (meaning I am not offended).
I think you are referring to this phenomena:
Link:
Google Answers: physical properties of water in a vacuum
The water will <boil> only when a little water in placed in a LARGE room because you want to minimize the effect that the water evaporates more quickly under vacuum and will prevent a full vacuum to be created.
The example I think that was given in this thread by OregonYeti was: A cool experiment is to have a vacuum pump de-pressurise the air in a container of water. Bring it to near total vacuum, and the water boils rapidly at room temperature.
here:
Cooking pasta
I that situation, the water will appear to boil by degassing. (it was a neat experiment we made in college) then it will stop boiling but slowly evaporate not boil again (Unless you have a monster pump!!). (but I may be wrong).
I feel like a nerd now being baited to answer you AndyG... hehehe!
Luc H.