General Question

antimatter's avatar

What happens to water when boiled in a vacuum?

Asked by antimatter (4234 points ) January 27th, 2014

Well the question is a bit geeky but straight forward.

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10 Answers

ragingloli's avatar

It will boil at -67°.

XOIIO's avatar

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.

zenvelo's avatar

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

Tropical_Willie's avatar

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

rexacoracofalipitorius's avatar

@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

Rarebear's avatar

It turns into vapor.

stanleybmanly's avatar

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.

antimatter's avatar

Thanks all this is great!

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