Why is the only byproduct of burning hydrogen water?

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Why is the only byproduct of burning hydrogen water?

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Answer 1 · 2015-02-21T04:09:55

The word "hydrogen" is Greek for "water-former".

If fuels are burned, the elements in the fuel combine with oxygen to form oxides. In hydrogen only hydrogen-oxide (=water) can be formed, as no other elements are present.

If hydrogen $H_2$ is burned, it connects to oxygen $O_2$ in a ratio of 2:1 as follows:

$2H_2+O_2->2H_2O$ which is water.

Extra:
Most fuels contain other elements, like carbon ( $C$ )
Carbon combines with oxygen to carbondioxide ( $CO_2$ )

Example : natural gas or methane ( $CH_4$ ) burns like:

$CH_4+2O_2->CO_2+2H_2O$

So the carbon-atom burns to carbondioxide, and the hydrogen burns to water (vapour).

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Why is the only byproduct of burning hydrogen water?

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