H2 Gas: Stability and Reactivity on Earth's Surface

[Simfish]

If it didn't escape to space so easily, then would it easily react with other things on Earth's surface?

 

[Borek]

Yes.

 

[enigma]

Hydrogen gas + oxygen gas = boom

See rockets for examples. They usually use liquid h2, but its the same principle

 

[Nemus]

You need about 2% hydrogen in air to form an explosive mixture but it would probably be relatively short lived in the atmosphere. Compare with methane for example. I have a vague recollection that it has a half life of some decades in the atmosphere.

 

[LudusRex]

The stability and reactivity of H2 gas on Earth's surface is largely dependent on its environment and surrounding conditions. H2 gas is a highly reactive molecule and can easily react with other elements and compounds in its surroundings.

In the Earth's atmosphere, H2 gas is relatively stable and does not react easily with other gases such as oxygen or nitrogen. However, on Earth's surface, H2 gas can react with certain metals and metal oxides, forming compounds such as water and hydrogen sulfide.

If H2 gas did not escape to space easily, it would still react with other substances on Earth's surface due to its high reactivity. The rate of reaction may be affected by the concentration of H2 gas in the atmosphere and the availability of other reactants.

Overall, while the escape of H2 gas to space may affect its reactivity on Earth's surface, it is still a highly reactive molecule that can easily react with other substances in its surroundings.