What happens to water when boiled in a vacuum?

It will boil at -67°.

@ragingloli cool!

Water boiling in a vacuum

I don’t see how this is “geeky”.

It boils, but at a lower temperature, same as water boiling at lower temperatures the higher in altitude you get.

It’s also easy to google this.

@ragingloli Is that Celsius or Fahrenheit? Wouldn’t it be a solid at -67?

It all has to do with the vapor pressure and other geeky physics.

@zenvelo I’m guessing that @ragingloli‘s answer is in Fahrenheit. There’s a nice phase diagram here: http://www.wolframalpha.com/input/?i=freezing+point+of+water+at+10^-5+atm

It turns into vapor.

Nothing happens to the water. It’s still water. The water evaporates to vapor then quickly diffuses to molecules as the vapor grows ever less concentrated.

Thanks all this is great!

No liquid exists in a vacuum; only solid or gas or plasma.