The_Rsert - 18-4-2005 at 09:47
Hello!
Can anybody tell me how much (in ml) hot steam is produced by 100ml of a 2:1 hydrogen/oxygen mix when lighted?
How fast does it burn in the scale/order of 100ml.
Or can anyone tell me which temperature the reaction reaches and how big the volume of the water-steam produced is at this temperature.
When I also know which volume the 2:1 H2/O2 mixture has I can calculate it by myself...
Thank you!
unionised - 18-4-2005 at 12:49
It rather depends.
If you mix the gases in a solid steel cylinder and light them the change in volume will be rather small. In that case, the steam will occupy 100 ml.
Then, when it cools, most of it will condense but the vapour over it will still take up 100 ml.
The mix will usually burn in well under a second. On the other hand, if it is in a thin pipe it may take a while, or even not burn at all.
Same theme, another question
The_Rsert - 20-4-2005 at 09:19
Same theme, another question:
How much H2/O2 (yes, steuchometric) mix is needet to produce 1000ml (peak value) steam.
Thank you!
mick - 20-4-2005 at 10:13
As unionised mentioned to make steam direct from O2 and H2 would be hard work. After the initial ignition 11/2 x 22.4 l gas would try to condense
into 1 mol water which is 18 cc. An easier way would be by heating water.
mick
The_Rsert - 20-4-2005 at 11:24
I need the "direct-after-explosion" peak value, I don't wanna make steam,
I wanna make a high high pressure for are -very- short time in a container for an experiment.
It does not matter how fast the steam condenses. 
Thank you!
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