• Answers
  • Web
Personalize Yedda, (And make Danny Happy)
People ask & answer about almost everything. Tell us what you're interested in... So we can personalize Yedda especially for you
I'm interested in:
Save
Cancel

Boiling point of heavy water

Why does heavy water (D2O) boil at 101.42° C compared to 100°C of regular water?


Answer this question
Share Send to a friend Watch Report
 

Best Answer

 
tom
31 answers
17 helpful answers

I've heard two explanations for this, and I can't remember which one is correct: one is that that because a molecule of D2O is heavier than a molecule of H2O, it takes more energy, i.e. higher temperature, to boil. The other is that there are stronger Hydrogen bonds in D2O compared to H2O.

I'll look into it.

Posted 2006-06-20T15:13:40Z
tom was invited by Yedda to answer this question.

Helpful?(2)
Rated as Best Answer

 

All Answers

 
608 answers
305 helpful answers

I was late for work this morning, because I got stuck in Zeno's paradox

As far as I know, Tom's second explanation is the correct one. Water is composed of 2 hydrogen atoms connected to an oxygen atom. The water molecules are connected to one another via hydrogen bonds. Deuterium is hydrogen which contains an extra neutron, and therefore the hydrogen bonds that it forms are stronger and more energy is needed to break them.
Posted 2006-06-21T06:39:04Z
Helpful?(2)
Rated as Best Answer

Sign in to participate

Got an answer for geler? Would you like to comment on the posted answers, or vote for the one which you think is the best?

Sign up for a free account, or sign in (if you're already a member).

Explore Related Questions

Other people asked questions on similar topics, check out the answers they received:


Q:

How much heavier are heavy water ?

how much heavier are heavy water ? I understand that in nuclear reactors the core is surrounded by a water that contain hydrogen ...
Submitted by Parle-G   3 years ago.
  • 2 answers
  • viewed 827 times
Last answer posted 3 years ago by Parle-G


Q:

Filtered water

I heard that filtered water which was filtered with a carbon filter (such as brita) are more acidic than non-filtered water, maybe ...
Submitted by vicente   3 years ago.
  • 5 answers
  • viewed 1684 times
Last answer posted 3 years ago by MackTheKnife


Q:

Mineral Vs purified water

Does mineral water healthier than purified drinking water?
Submitted by aran   3 years ago.
  • 2 answers
  • viewed 2306 times
Last answer posted 8 months ago by saliha



» More...

Feed - Subscribe to changes to this Q&A Blog
ADVERTISEMENT
  • Answers
  • Web
Copyright © 2006-2009, Yedda Inc. and respective copyright owners · CC License