Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Other Reactions That Place When Hydrogen and Oxygen are combined

  1. Sep 24, 2014 #1
    After reading this article, Water Vapor Found on Neptune-size Alien Planet - http://www.space.com/27251-water-found-neptune-size-exoplanet.html, I was wondering what other reactions would occur within the atmosphere of the planet as a result of the combination of oxygen at 25% to the 90% volume of hydrogen that is already present on the planet?
     
  2. jcsd
  3. Sep 24, 2014 #2

    Borek

    User Avatar

    Staff: Mentor

    The only thermodynamically stable product of the reaction between hydrogen and oxygen is water. In theory it is also possible to produce hydrogen peroxide, but it is not stable and decomposes into water and oxygen.

    Whether other products are possible depends on the presence of other substances (for example methane can yield water and carbon dioxide).
     
  4. Sep 24, 2014 #3
    If methane is introduced into the situation then water and carbon dioxide would be created thus allowing plant life to consume the carbon dioxide and then produce oxygen that would then combine with the hydrogen to create even more water.
     
  5. Sep 24, 2014 #4

    Borek

    User Avatar

    Staff: Mentor

    Perhaps you should define your question more precisely - original post didn't say anything about plant life. If you mean a planet with plant life and with plant produced oxygen, you can't expect hydrogen in the atmosphere.
     
  6. Sep 24, 2014 #5
    The planet would be void of plant life at first and then transplanted to the planet after the combination of methane and oxygen took place.
     
  7. Sep 24, 2014 #6

    Borek

    User Avatar

    Staff: Mentor

    No idea how you transplant planet to planet. Can we stick to chemistry and not to fairy tales?
     
  8. Sep 24, 2014 #7

    SteamKing

    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper

    If the planet's atmosphere is composed of hydrogen at 90% by volume, how can you have oxygen at 25% by volume? The whole atmosphere has gotta add up to 100%.
     
  9. Sep 25, 2014 #8
    As the reactions between hydrogen, oxygen and methane cause changes to occur where the gas becomes a liquid the volume of gas will decrease well below the 100% level that you are describing.

    Another question is if lets say 500% oxygen and methane was combined with the 90% hydrogen could the increase in pressure possibly cause thunder cells to form?
     
  10. Sep 25, 2014 #9

    Borek

    User Avatar

    Staff: Mentor

    Sorry, but there is no science behind your questions, just juggling of buzzwords. That's not what we do at the forum.

    Topic locked. Please read the forum rules.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Other Reactions That Place When Hydrogen and Oxygen are combined
Loading...