Water - combination of hydrogen and oxygen and both will fire. Then why v cant use water as fuel?

Answer 1

Because atoms lose aspects of their original properties when they are added together to create molecules.

For instance, both hydrogen and oxygen are gases, but when you combine them they are a liquid.

Iron is very strong, and relatively durable on its own, but when you combine it with oxygen (ironoxide) you get rust that is brittle and relatively weak.

Only in rare instances will an atom retain some of its original qualities when combined into a molecule. This is because for the large part the properties of an atom depend on the configuration of its electron shells and the electrons within them. When added together to form molecules, the configuration of these shells, and the arrangement of the electrons within them changes, and hence the properties change.


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Answer 2

You could think of water as hydrogen and oxygen that have already been burnt. You can't get any further enery out of it through combustion, just the same way you can't burn the ash in your fireplace any further.

Any attempt to use water to run cars is a scam. Most of those are perpetual motion machines, which are impossible. If all you put in is water, and all that comes out of the tail pipe is water, then you could hook the exhaust pipe up to the fuel line and drive forever without adding any fuel at all. The fact that the Defense Department is interested in this research only indicates that there are some real idiots working for our government. Trust me, save your money to invest in some other fuel source.

Answer 3

Combining hydrogen and oxygen can indeed release a great deal of energy, and assorted engines are being built to take advantage of this fact. But the reverse process takes too much energy and does not yield any energy. In other words, hydrogen an oxygen gas can indeed be used used as fuel sources, but water cannot.

Answer 4

You can use water as fuel. If you add energy to it and break the water molecule back into Oxygen and Hydrogen. When you react oxygen and hydrogen together they will form water (H2O) and release a lot of energy. To break water apart back into H and O you have to add back that energy plus some, so it doesn't really work.

The ICY_U video is like this process. Deep in the article about this water torch is the fact that it runs off 220Volts 70 Amps (more than your whole house). That's a lot of energy for a little torch.

Answer 5

Due to the bonds between the individual molecules. There are certain elements, however, that burn at a hot enough temperature to break the bonds, turning water into a fuel.
There was a story about 6 years ago about a fire department using water to try putting out a fire, but the water fueled the fire instead.

Answer 6

Because the two elements are combined to form water. Seperate the two and burn the hydrogen, exactly what a hydrogen powered car would do.

The video in the previous post uses electricity to break the bond and the torch burns the hydrogen.

Answer 7

We can and are using Hydrogen and Oxygen combination for useful purpose.

1.In Cryogenic rocket engine
2.Fuel cell to produce Electricity

Answer 8

Hydrogen gas is the hardest gas to contain, it will leak out of most common containers. Also how much energy do you get out of the reaction? If it cost you more energy to produce hydrogen then you get out of burning it, it is unefficent. We would have to rely on other fuels to mass produce it. On the plus side, it is very clean, what do you get out of burning Hydrogen and Oxygen - Water vapor and Heat.

Answer 9

Because the molecules of hydrogen and oxygen that create water are stuck together so well that it takes too much energy to get them apart.

Answer 10

when the two atoms combine their original properties are lost and a new one is formed when the two atoms are combined, in this case, they lose their gas properties and gains liquid properties, even though both will make fire the water has a different property than the gas, but i never said its impossible...