Does a mixture of oxygen and hydrogen burn or explode?
543304
Hydrogen is highly flammable, burning at concentrations as low as 4% H2. When mixed with oxygen, hydrogen explodes upon ignition. A unique property of hydrogen is that its flame is nearly invisible in air. This makes it difficult to tell if a leak is burning, and carries the added risk that it is easy to walk into a hydrogen fire inadvertently.
324460
Oxygen is required for combustion, not for nuclear reactions.\nIn Sun, the tremondous amount of energy is released by nuclear fusion reaction in which two hydrogen atoms combine to give a helium atom. A very small mass is converted into large energy, given by the famous equation: E=mc^2, where m is the difference in mass and c is speed of light.
29477
For the most part, fire is a mixture of hot gases. Flames are the result of a chemical reaction, primarily between oxygen in air and a fuel, such as wood or propane. In addition to other products, the reaction produces carbon dioxide, steam, light, and heat. If the flame is hot enough, the gases are ionized and become yet another state of matter: plasma.
720001
strictly speaking, substances undergo combustion in the presence of oxygen and 'burn' would not be precise. \nhowever answering the question, oxygen is an oxidising substance and hence it is able to oxidise the organic subs. and usually converting them into carbon di oxide and water, and this is accompanied by the release of energy in the form of heat
1033515
You can burn it. \n\nYou can use it in a fuel cell (essentially a more complicated way of burning it that gives you electricity directly).\n\nYou cannot use it for nuclear power if it ordinary hydrogen, but if it is deuterium (hydrogen with a neutron as well as a proton in its nucleus) you can in theory fuse it to form helium - though this has not been achieved in a practical way yet (the Sun does it pretty well though).
235031
those ans r right but I just want add whats not listed.\n\n4 the 2nd ans for explosion just ad pure Rb(37),Cs 55, or Fr 87 (in their pure metal alloy form) mix it with water. then BOOM. Cs and Fr is extremely reactive with H20\nso biggest bang will be Fr. \n\nthe reaction 2Fr(solid) + H20(gas or liquid) = Fr2O(oxide) + H2 (gas)\nthe reaction is very rapid, so it realeases a big ammount of H2 quickly in a very short time ( BOOM)\n\nanyway mixing H20 with NaCl do not create NaOH and HCl in their pure form. they only form ions of H+ and OH- and Cl- and Na+ these things moves arround in liquid, so u cant say that it is a stable NaOH and HCl
1054854
The process of combustion, or burning, is simply combining something with oxygen very rapidly, in a reaction that releases heat. When hydrogen burns, the result is water, which is just fully oxidized hydrogen. In effect, water is the "ash" of burned hydrogen. \n\nAnd like all other forms of ash, because water is already fully oxidized, it can no longer accept oxygen, and therefore cannot burn.
510778
Blowing up engine? are we trying to use electrolysis to run an engine?? Try diluting the mixture with something other than oxygen. Or, better yet, just stop and let someone who knows what they are doing give it a whirl. The fact that you are here doesn't give me much faith in your chemical or engineering skills.
803064
That is the sole reason safety. Hydrogen will explode and helium is a noble gas and is very stable.
238623
you need 3 things for fire, spark, oxygen and something to burn.  If you add water, you cut oxygen then, you have no fire
622886
Yes and No.\n\nOne can break the hydrgen and oxgen apart and reuse them as fuel and oxidizer, but it take aprox. same amount of energy (a  little bit more) to do the break up as you will get back.  So, no net energy gain, and actualy a little bit energy lost.
191415
The electrolysis of water with the o2 and h collected in seperate test tubes a lit match will ignite the hydrogen...POP! and a matchstick that has been blown out but still has a hot ember will burst into flame in the oxygen.
248810
It's a matter of thermodynamics.  The end product of burning hydrogen with oxygen in an engine, or recombining it in a fuel cell, is water.  So, if you're going from water to hydrogen and oxygen, and then back to water when you burn it, the heat given off by the chemical reaction you're using to power the engine is the same as the amount of energy it took to split the hydrogen from the water in the first place.  Add to this the limitations of efficiency on engines, or any other device, and it ends up being impossible to have an engine that runs on water.  If you have some other power source, you can use this to split the hydrogen, and then burn it in your engine, but then the energy really isn't coming from the water being used as a fuel, you're just using the hydrogen to carry the energy from your power source to your engine.  \n\nNow, if you had a pure fluorine atmosphere, you could burn water in an engine, but I'm not sure what you could make an engine out of such that it wouldn't be destroyed by the fluorine!
1176147
In a fire, Oxygen is not the fuel, it is the oxidizer.  Depending upon what is burning, the fuel could be any number of things.\nOxygen does not burn, but is required for combustion.\n\nIn order for something to burn, 3 things are necessary,\n-Fuel\n-An oxidizer (Oxygen)\n-[activation] Energy\n\nUnless these 3 things are present, the object in question will not burn.\nIf we assume fuel and Oxidizer are plentiful, then the only thing left which will keep something from burning is that extra bit of energy needed to set off the reaction.  After one gets a fire going, usually, this energy is provided by the excess heat the fire generates, but it needs to be supplied initially by some form (for example, lighting a match to start light a candle).\nIf one were to take away the fire's ability to provide its own activation energy, it would go out unless supplemented by some outside source.\n\nWhen a gust of wind blow out a fire, it is blowing away the energy the fire needs to burn, it is cooling it off too much for it to continue burning.
978880
Water and carbon dioxide are the only products when the hydrocarbon fuel (i.e. fuel composed *entirely* of both Carbon and Hydrogen atoms) burns in a *complete* reaction.\n\nHydrogen is a fuel that is not a hydrocarbon.  If you burn hydrogen in a complete reaction you will only get water.\n\nCarbon is also not a hydrocarbon.  You will only get carbon dioxide.\n\nAlso, in reality, a reaction almost never goes to completion, i.e. all the reactants are not converted to products.  You can have some of the original reactant left over, and you can also have intermediate products (like carbon monoxide and nitrogen oxides)
361585
Put the lighted end of a glowing splinter into a test tube containing the subject gas. If it burns or bursts into flames, you have oxygen in there. But if the splinter makes a pop, you have hydrogen instead. If it is extinguished, you got carbon dioxide
302677
Hydrogen is the lightest and flamable, in other word, can be burned, element in its natural form, which is gas. Once it 's been turned into liquid itself, hydrogen does not hold its characteristics well because of the temperature is being used to keep the liquid form. So hydrogen, itself, already not stable.\nOxygen, on the other side, have most its characteristics in liquid or gas form. It is not flamable in the sense that it can not cause fire. But it can be burned and is needed for the existence of fire. So Oxygen is a little more stable.\nNow once Oxygen and Hydrogen combine together, because Hydrogen is very light, and Oxygen is heavier (it really involves all the atoms, especially electrons), Hydrogen tends to assume some characteristics of Oxygen. This includes the stable condition.\nAlthough after combined, they show to be very stable and hold very tight to each other, there was a explosion during the process of combining. As we know, water is the molecular compound, H2O, which means two molecules of hydrogen and a molecule of Oxygen in the mixture. In the normal process of making true water, an estimated amount of Hydrogen and Oxygen gases are put into tank with the ratio of 2:1. However, it is only estimated, so sometimes one gas can be a little more than the other. Also, they are both put in tank in very small amount at the time, then add some more. So the reaction would be slow and controllable.\nIf the two gases are put in at the same time, exact Hydrogen and Oxygen at the ratio of 2:1, and large amounts, they can become Water Bomb. Thus, water does reach a flash point (just not when heated).\nYour question is not stupid. It is very interesting and very smart. Normal people would not care to think out of the box or would not know more than they should. You should reward yourself for being brave enough to ask. But this is the important thing: I recommend you not to try the Water Bomb because it requires very detail and exact conditions. It should only be done in lab with supervisor. The explosion can be big...