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The boiling point of water is 100 [[Celsius|°C]] (212 [[Fahrenheit|°F]]) at standard pressure. On top of [[Mount Everest]] the pressure is about 260 [[Millibar|mbar]] so the boiling point of water is 69 [[Celsius|°C]].
For purists with a knowledge of thermodynamics, the ''Italic text''normal boiling point of water''Italic text'' is 99.97 degrees Celsius (at a pressure of 1 atm, i.e. 101,325 Pa). Until 1982 this was also the ''Italic text''standard boiling point of water''Italic text'', but the IUPAC now recommends a standard pressure of 1 bar (100,000 Pa). At this slightly reduced pressure, the ''Italic text''standard boiling point of water''Italic text'' is 99.61 degrees Celsius.
(Cf. DeVoe, Howard, Thermodynamics and Chemistry. Prentice-Hall, 2001)
==See also==
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