Naked Science Forum

Non Life Sciences => Chemistry => Topic started by: Tset Tsyung on 22/06/2008 17:18:53

Title: Is water combustible? Under what circumstances might it burn?
Post by: Tset Tsyung on 22/06/2008 17:18:53
I have been told that when water is under the correct circumstances (such as pressure and temperature) and then has a catalyst in the form of an explosion added then water vapour can become flammable!

I was told this when discussing alternative methods for improving fuel sources in cars.

I was told (by someone who is either telling the truth or mistaken) that in the sixties he knew someone that ran a mini 1000 with an extended ram jet.  This allowed him to run the car on a mixture of paraffin (illegal) and water.

What are the necessary conditions needed to create the above environment for water to become explosive/flammable?
Title: Re: Is water combustible? Under what circumstances might it burn?
Post by: RD on 22/06/2008 19:28:57
Catalysts can be used to separate water into hydrogen and oxygen.
The hydrogen can then be used as fuel in an internal combustion engine...
http://peswiki.com/energy/Directory:Hydrogen_from_Water#Catalytic_Systems
Title: Re: Is water combustible? Under what circumstances might it burn?
Post by: Bored chemist on 22/06/2008 19:39:46
Water vapour won't burn (except in an atmosphere of fluorine).
Catalysts can only make reactions happen faster- they don't make reactions happen that are not energetically favoured; you need an external engery source to do that.
Title: Is water combustible? Under what circumstances might it burn?
Post by: LeeE on 04/07/2008 00:19:32
Burning is the process of oxidisation i.e. combining with oxygen to release energy.  Water is already oxidised, so you can't 'burn' water - it's already been 'burnt'.

Title: Is water combustible? Under what circumstances might it burn?
Post by: neilep on 04/07/2008 01:53:09
Some chap did ask a question with a similar explosive edge......I can't remember who it was, but he's gallant, charming, a bonviveur and raconteur.....

...anyway...his question can be found via the below link which takes you to a page on the other end of it !!.....amazing isn't it ?.......you know.....links and all that !!


http://www.thenakedscientists.com/forum/index.php?topic=6950.0