MadSci Network: Physics
Query:

Subject: Energy required to disassociate the water molecule: photon and/or temp

Date: Thu Dec 5 01:06:22 2002
Posted by Gerald
Grade level: grad (science) School: No school entered.
City: San Diego State/Province: CA Country: US
Area of science: Physics
ID: 1039068382.Ph
Message:

What energy does it take to disassociate the water 
molecule?   That is, H2O must be able to be broken 
down into hydrogen and oxygen if there were photons 
above a certain energy, or if there were a 
temperature above a certain number of degrees.

If you can, tell me what temperature (degree K or F)
and what energy or wave length of light is necessary!



Now I think I know that all atoms have a certain 
random degree of energy, and thus some water must, 
from time to time, disassociate on its own.  So the 
real answer might be, what energy of light does it 
take for 10% of some amount of water to disassociate 
in a year's time, and what energy of light does it 
take for 50% of some amount of water to disassociate 
in a year's time.   
   Take these same amounts of disassociations due 
to temperatures!   Thanks!!!!

Gerald L. O'Barr        




Re: Energy required to disassociate the water molecule: photon and/or temp

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