H20 + ELECTRIC CURRENT = ? (fill in the equation)?
Answer:
If you allow an electric current to pass through water, the H2O will decompose into hydrogen gas and oxygen gas:
2H2O (l) --> 2H2(g) + O2(g)
The process is known as electrolysis. If you put two metal electrodes in the water, H2 will form at one elctrode, while O2 will form at the other.
This is an example of a nonspontaneous redox reaction (H is oxidized, O is reduced).
The process is kinda slow, since pure H2O is not such a great conductor of electricity (it is a molecular compound and does not contain many ions). Usually, you add a salt to the water that won't be involved in the redox rxn to increase its conductivity. I've used sodium thiosulfate with good results.
2H20 + Current = 2H2 + O2
It's not the wisest idea though as electricity and water don't really mix that well.
H2 + 1/2 O2
But only if the current is DC
And only if the voltage is higher than X
2H2O + current=2H2 +O2
gotta be pretty careful that the current doesn't cause the gasses to explode after they are generated from the reaction
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