Other Reactions That Place When Hydrogen and Oxygen are combined

In summary, the article discusses water vapor being found on an exoplanet that is about the size of Neptune. The article discusses possible reactions that would occur in 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? 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?
  • #1
Dryson
43
0
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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  • #2
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).
 
  • #3
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.
 
  • #4
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.
 
  • #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.
 
  • #6
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?
 
  • #7
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%.
 
  • #8
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?
 
  • #9
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.
 

Related to Other Reactions That Place When Hydrogen and Oxygen are combined

1. What happens when hydrogen and oxygen are combined?

When hydrogen and oxygen are combined, a chemical reaction takes place where the two elements bond to form water (H2O). This is known as a combustion reaction and it releases a large amount of heat energy.

2. Is the reaction between hydrogen and oxygen exothermic or endothermic?

The reaction between hydrogen and oxygen is exothermic, meaning it releases heat energy. This is because the bonds formed between the two elements in water are more stable than the bonds in hydrogen and oxygen alone.

3. Why is the reaction between hydrogen and oxygen important?

The reaction between hydrogen and oxygen is important because it is the basis for combustion, which is essential for many industrial processes and transportation methods. It is also the reaction that powers fuel cells, which are a clean and efficient source of energy.

4. What are the products of the reaction between hydrogen and oxygen?

The products of the reaction between hydrogen and oxygen are water and heat energy. The chemical equation for this reaction is 2H2 + O2 → 2H2O + heat.

5. Can hydrogen and oxygen react without a spark or flame?

Yes, hydrogen and oxygen can react without a spark or flame if they are mixed in the correct ratio and under certain conditions. This is known as a spontaneous reaction and can occur in the presence of a catalyst or under high pressure and temperature.

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