Other Reactions That Place When Hydrogen and Oxygen are combined

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Discussion Overview

The discussion revolves around the chemical reactions that may occur when hydrogen and oxygen are combined in the atmosphere of a Neptune-sized exoplanet, particularly considering the presence of methane and the implications for potential atmospheric changes.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • Some participants note that the only thermodynamically stable product of hydrogen and oxygen is water, while hydrogen peroxide is theoretically possible but unstable.
  • Others suggest that the presence of methane could lead to the production of water and carbon dioxide, which could support plant life that consumes carbon dioxide and produces oxygen.
  • One participant questions the feasibility of having both 90% hydrogen and 25% oxygen in the same atmosphere, pointing out that the total must equal 100%.
  • Another participant raises the idea that reactions involving hydrogen, oxygen, and methane could lead to changes in gas volume, potentially allowing for conditions that might lead to thunder cells.
  • Some participants express skepticism about the practicality of transplanting plant life to the planet, suggesting a focus on chemical reactions instead.

Areas of Agreement / Disagreement

Participants express differing views on the chemical reactions possible in the atmosphere, the feasibility of certain atmospheric compositions, and the implications for plant life. There is no consensus on the validity of the proposed scenarios or the scientific basis of some questions raised.

Contextual Notes

Participants highlight limitations in the original question's clarity regarding the atmospheric composition and the assumptions about plant life and chemical reactions. The discussion reflects uncertainty regarding the interactions and stability of the proposed chemical products.

Dryson
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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?
 
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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).
 
Borek said:
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).

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.
 
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.
 
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.
 
Dryson said:
The planet would be void of plant life at first and then transplanted to the planet

No idea how you transplant planet to planet. Can we stick to chemistry and not to fairy tales?
 
Dryson said:
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?

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 got to add up to 100%.
 
SteamKing said:
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 got to add up to 100%.

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 let's say 500% oxygen and methane was combined with the 90% hydrogen could the increase in pressure possibly cause thunder cells to form?
 
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.
 

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