how hydrogen gas is proudced from water?
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Electrolysis is the process that would produce hydrogen gas from water by sends electric currents through water, breaking its bonds and thus separating the two hydrogen atoms from the oxygen.
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Basically you need to oxidise ammonia and then  adsorb the gases into water.\n\nSee the site below.
199855
Electrolysis. Running a current through water will separate it into hydrogen and oxygen.
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To put it simply,\nHydrogen fusion works by fusing two Hydrogen atoms into a Helium atom.  This process gives off a lot of energy, which is the source of the sun power.\nIt takes incredible heat and pressure for this nuclear reaction to occur, this is definatly not something you do in your back yard.\n\nFor more detailed info,\nhttp://en.wikipedia.org/wiki/Nuclear_fusion\n\nIt is quite easy to seperate Hydrogen gas from water in a process called "electrolysis".  By passing an electric current through water with a dissolved electrolyte, it is possible to split water into Hydrogen and Oxygen gas.  There are actually numerous other ways of producing Hydrogen gas, but non as well known as electrolysis.
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Hydrogen gas (H2) is very combustable, (Oxygen gas [O2] is not), but water (H2O) does not burn.\n\nWhen substances are reacted, their chemical propertis change completely. In the case of Hydrogen and Oxygen gas, when these two substances combust, the product is water.  Water represents the produce of the two substances burning, it is no longer the original substances, it is totally new.\nJust like you cannot burn the ashes of a camp fire like you would be able to new wood, you cannot burn water since it has already been chemically reacted.\n\nThe Hydrogen is already bonded with the Oxygen in the case of water, there is no reason for it to furhter react with Oxygen since it is already in a stable state.
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Electrolysis. By applying electricity, you can break H2O into H2 and O2 gas.\n\n2H2O --> 2H2 + O2
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Hydrogen and oxygen.  together, it's water.  Seperately, one is a powerful oxidizer that can, at high doses, attach tissues and potentially cause cancer; the other a powerful explosive gas.
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H2O...two parts hydrogen and 1 part oxygen in each of the water molecules.
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hydrolysis. the splitting of the water molecule. or just seperate the densities of the different components of air, then isolate the one that's the density of hydrogen and viola, you have pure hydrogen.
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No, but hydrogen is not free roaming in the Earth, it's tied to oxygen (water)
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Some tips...\n--Use a strong electrolyte (substances that will break up into ions [almost] completely in solution), the higher the concentration, the better.  Also you need to be careful on which electrolyte you choose.\n--Try not to use an over volttage (a voltage over the minimum necesary to electrolisize the water.  Insread, try to use a very high current, higher current = more production of gasses.  To increase current without increasing voltage, reduce resistance.\n--Place the electrodes close together to reduce internal resistance in the cell.\n\nEven by doing these things, you cannot hope to get much better than about 50% efficency doing water electrolysis, maybe 65% if you are good.\n\nThere are yahoo groups out there devoted to just such a tast as Hydrogen production through water electrolysis (I have one infact), they can also give advice based on experience.
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Hydrogen gas was generated on site by the action of sulphuric acid on iron filings in a large, covered container.  The gas generated was then pumped into the balloon.
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The idea is to add the acid to the water and then pass a current through the water.  The water will split into Hydrogen and Oxygen.  The bubbles of these gasses can collected in tubes, the H will produce twice as much gas as the O.\n\nThe rocket can be powered by igniting the hydrogen.\n\nI think the citric acid is more reactive than absorbic acid, but any thing will do including vinegar (acetic acid).
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At standard temperature and pressure hydrogen is a colorless, odorless, nonmetallic, univalent, tasteless, highly flammable diatomic gas. Hydrogen is the lightest and most abundant element in the universe. It is present in water, nearly all organic compounds and in all living organisms. Hydrogen is able to react chemically with most other elements. Stars in their main sequence are overwhelmingly composed of hydrogen in its plasma state. The element is currently used primarily in fossil fuel upgrading. Other uses include as a lifting gas, as an alternative fuel (see Hydrogen economy), and more recently as a power source in fuel cells.\nHydrogen can be prepared in several different ways but the economically most important processes involve removal of hydrogen from hydrocarbons. Commercial bulk hydrogen is usually produced by the steam reforming of natural gas. At high temperatures (700–1100 °C), steam (water vapor) reacts with methane to yield carbon monoxide and H2.\n\nCH4 + H2O → CO + 3 H2 \nThis reaction is favored at low pressures but is nonetheless conducted at high pressures (20 atm) since high pressure H2 is the most marketable product. One of the many complications to this very optimized technology is the formation of coke or carbon:\n\nCH4 → C + 2 H2 \nConsequently, steam reforming typically employs an excess of H2O.\n\nAdditional hydrogen from steam reforming can be recovered from the carbon monoxide through the Water gas shift reaction:\n\nCO + H2O → CO2 + H2 \nOther important methods for H2 production include partial oxidation of hydrocarbons:\n\nCH4 + 0.5 O2 → CO + 2 H2 \nand water electrolysis.\n\nIn the laboratory, H2 can be generated by treatment of many metals with acids or base.\n\nZn + 2 H+ → Zn2+ + H2 \n2 Al + 6 H2O → 2 Al(OH)3 + 3 H2 \n\n\n\nA hydrogen economy is a hypothetical future economy in which the primary form of stored energy for mobile applications and load balancing is hydrogen (H2). In particular hydrogen is proposed as a fuel to replace the gasoline and diesel fuels currently used in automobiles.\n\nHydrogen production is a large and growing industry. Globally, about 50 million metric tons of hydrogen were produced in 2004; the growth rate is about 10% per year. The energy in the current flow corresponds to about 200 gigawatts. Within the U.S., production was about 11 million metric tons, or 48 GW (10.8% of the average U.S. total electric production of 442 GW in 2003). Because hydrogen storage and transport are so expensive, most hydrogen is currently produced locally, and used immediately, generally by the same company producing it. As of 2005, the economic value of all hydrogen produced is about $135 billion per year.\n\nCurrently, hydrogen production is 48% from natural gas, 30% from oil, and 18% from coal; water electrolysis accounts for only 4%.\n\nThere are two primary uses for hydrogen today. About half is used to produce ammonia (NH3) via the Haber process, which is then primarily used directly or indirectly as fertilizer. The other half of current hydrogen production is used to convert heavy petroleum sources into lighter fractions suitable for use as fuels. This latter process is known as hydrocracking. Because the world population and the intensive agriculture used to support it are both growing, ammonia demand is growing. Hydrocracking represents an even larger growth area, as rising oil prices encourage oil companies to extract poorer source material, such as tar sands and oil shale.\n\nStorage is the main technological problem of a viable hydrogen economy. Some attention has been given to the role of hydrogen to provide grid energy storage for unpredictable energy sources, like wind power. The primary difficulty with using hydrogen for grid energy storage is that converting power to hydrogen and back is not cheap.\n\nHydrocarbons are stored extensively at the point of use, be it in the gasoline tanks of automobiles or propane tanks hung on the side of barbecue grills
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follow the above.. to get gas.. electrolysis is the safest bet\n\nbut if you want to have fun???\n\nput some soap in the water and stir it around before you put the electrodes, this creates hydrogen bubbles that float and when put next to fire make a sweet pop sound.. do it safely, in a lab\n\nits a good demo for a highschool chem class
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Hydrogen is volatile due to its extreme small size.  Its reactivity is due to its small size, which leads to pervasiveness and high average molecular speeed.  Simplicity can often be unstable.\n\nThe magic or marvel behind hydrogen fuel, is that besides heat energy, the reation simply produces water.  Most other fuels (carbon based) produce CO2 and water with complete combustion.  CO2 is said to lead to global warming.  \n\nOf course water's got problems too, but no one wants to pay attention to that.  See the link below for more inf.
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One way to do that for relatively small volumes of water is to force the sea water through a special membrane filter under high pressure. The filter membrane must be constructed so that its holes are large enough to just pass a water molecule, but not large enough to pass metal\nmolecules, salt molecules, algae, etc. The result would be fresh clean water with a lot of brine solution left in the pressurized tank that needs to be dumped.\n\nAnother process which is more poractical for large volumes of fresh water production is electrolisis. In that process, electrical current is passed through the water to break it down into its basic elements such as hydrogen and oxygen (and all the other junk that is left over).\n\nOnce the hydrogen and oxygen are collected and recombined, the result is pure fresh water. Again, the vat or tank holding the original sea water now has a heavy brine solution which must be disposed of somehow. Most any use of sea water to produce fresh water will generate a lot of salty brine by-product that could poison sweet earth in the vicinity if it is merely dumped.