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Why is the only byproduct of burning hydrogen water?

Answer 1

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

Fuels that burn combine their elements with oxygen to form oxides; in hydrogen, only hydrogen-oxide (= water) can form because hydrogen contains no other elements.

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#

Thus, a carbon atom burns to produce carbon dioxide, and a hydrogen atom burns to produce water vapor.

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Answer 2

Xavier Atkins

The byproduct of burning hydrogen is water because when hydrogen combines with oxygen during combustion, it forms water vapor (H2O).

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.