2006-10-08 13:36:33 · 6 answers · asked by cubicles4 1 in Science & Mathematics ➔ Chemistry
oxygen.
2006-10-08 13:59:50 · answer #1 · answered by Dr. J. 6 · 0⤊ 0⤋
Oxygen
2006-10-08 21:01:55 · answer #2 · answered by squanto 2 · 0⤊ 0⤋
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Deuterium Oxide Boiling Point
2002048
name Ho Wen W.
status student
age 14
Question - Water (H2O) has a boiling point of exactly 100 degrees Celsius.
Deuterium Oxide (D2O) has a boiling point of 101 degrees Celsius.
Why does deuterium oxide have a higher boiling point?
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I do not know exactly why. But my first guess would be to apply simple
physics to the problem. D2O is slightly heavier than standard water (H2O).
It has two extra neutrons, since the deuterium is Hydrogen plus a neutron.
It takes slightly more energy (higher temperature) to move that additional
mass.
-Darin Wagner
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The boiling point of water is not EXACTLY 100 C., but it is close enough
because I do not think you want a detailed instruction about temperature
scales. D2O has a somewhat higher boiling point because its molecular weight
is about ( 16+2+2=20) and H2O is about (16+1+1=18) ignoring the isotopes of
oxygen
(O17 and O18) contributions. The higher molecular weight makes D2O slightly
less volatile than H2O.
It is more complicated than that but the above is approximately correct.
Vince Calder
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2006-10-08 20:58:31 · answer #3 · answered by Anonymous · 0⤊ 0⤋
oxygen will have a higher boiling point since the london dispersion forces will be stronger in a heavier molecule
2006-10-08 20:39:36 · answer #4 · answered by Greg G 5 · 0⤊ 0⤋
oxygen = -183 C
Hydrogen = -253 C
2006-10-08 20:39:59 · answer #5 · answered by The Cheminator 5 · 0⤊ 0⤋
Oxygen.
Hydrogen has one of the lowest melting and boiling points of any gas.
2006-10-08 20:39:59 · answer #6 · answered by Alan Turing 5 · 0⤊ 0⤋