there are hydrogen and oxygen molecules in environment, but why do these not form water?

Question

why does water not form in a room for example

Answer 1

You need to isolate some hydrogen, first. Then you need to supply activation heat for the reaction to take place - a hydrogen & oxygen flame (explosion).

Yep...water is formed by fire.

Answer 2

There's very little hydrogen gas in the environment since its density is so low it floats to the top of the atmosphere and escapes into space.

Even if there were hydrogen in the atmosphere, it would not react with oxygen to form water because the molecules do not have enough energy. For molecules to react they must collide with sufficient energy: this energy is called the activation energy. However a spark can start it all off, which is why hydrogen is explosive in air.

Answer 3

Even though the formation of water from hydrogen and oxygen is exothermic (gives off heat), there is still an activation energy barrier that must be overcome. (Plus there really isn't that much hydrogen present in the atmosphere as H2.) In order to overcome the activation barrier, you must have some amount of energy (a spark, for example) and enough hydrogen around that you can verify that water has actually formed.

Answer 4

Hydrogen and Oxygen can bond in many ways and still be stable, it takes a fare amount of energy for the bonds to break and reform as other molecules.

In fact, the Hydrogen and Oxygen in the air CAN form water under the right conditions, hence, clouds then rain.

Answer 5

although there is Hydrogen in the environment, it is often found in compounds mixed with other elements. you should also remember that each reaction needs proper conditions to take place. that means that you need to break the bond between O2 and H2 molecules first (endothermic) and then the formation of bond b/w oxygen and hydrogen atoms will be exothermic (explosion may be)

Answer 6

You require Free floating gas phase H2 and O2 and the right activation energy for these two compounds to create water and energy following the reaction: 2 H2 + O2 => H2O + Energy

H2 is a very volitile substance and it is uncommon in our atmosphere (compared to other gases like nitrogen and oxygen). This is because It's more energetically stable for H2 to already be fixated in compounds like water.

(Also, don't confuse Gasous O2 and H2 for Water vapor (steam). When water heats up it makes H20(g) molecules that behave like gases; these gases after cooling or compressing form water in its liquid state again. Heating up H20 Does not seperate it into its seperate chemical species... its just a physical phase change.)

Answer 7

Our area craft already use hydrogen gas cells to produce electricity and water for ingesting. the real project is to discover a thank you to chop up the hydrogen and oxygen back into their molecular gasoline varieties, through fact it the two demands lots of means (better than you acquire from burning the O2&H2) or another chemical compounds which might then substitute into your maximum suitable restricting element. flora and animals cycle carbon between one yet another yet not the hydrogen. one in all the different respondents mentioned specific micro organism which purely launch H2 gasoline. i'm drawn to this, and desire in line with probability he provides a hyperlink or 2 approximately them. this could be a very practical micro organism if we'd desire to alter to hydrogen gas cells as means components for autos and such, to assert not something of ending up a cycle for a technology deliver like which you have proposed. bear in mind that for the period of the international, all of those cycles are saved in action by utilising the means enter from the solar. A deep area deliver that needs to maintain organic and organic cycles as existence help might want to furnish an means source that stands in for the solar. this might maximum probable be nuclear means, or something much extra significant that we've yet to harness.

Answer 8

It has to be the proper combination of the two in order to create water. H2O. If you get H2O2 for example then you have hydrogen peroxide.

Answer 9

i does. thats what humidity is. its just not huge amounts