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On Wed, 15 Jun 2005 18:01:25 -0500, John Fields
wrote: On Tue, 14 Jun 2005 11:21:21 -0800, (Floyd L. Davidson) wrote: The idea that water boils at 100C and freezes at 0C, without some mention of pressure, has little meaning. Water can "boil" at 0C too. --- Since, by your own admission, the boiling and freezing point temperatures of water are pressure dependent, I invite you to state what pressure would be required to be exerted on a volume of liquid water in order to cause it to boil at 0°C. The boiling and freezing points are pressure dependent. Not only that, a certain amount of heat must be lost or gained (latent heat, I believe, is the term) before the change of state occurs. I am simply going by memory of my old Physics classes, and I have no idea what pressure would be required to allow water to boil at 0 C. I think other substances have boiled at lower temperatures than that at STP though. Tom |
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