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    I am doing an exam question and I had to write out a reaction. The answer was CO + 3H2 ==> CH4 + H2O, but I wrote CO + 2H2 ==> CH4 + 1/2 O2
    CH4 had to be produced and I got the right reactants but not the right moles, but I'm not sure why water is produced instead of oxygen. Both reactions make sense to me
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    What was the question, it would make it easier if you could post that too with the context
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    (Original post by PuffyPenguin)
    I am doing an exam question and I had to write out a reaction. The answer was CO + 3H2 ==> CH4 + H2O, but I wrote CO + 2H2 ==> CH4 + 1/2 O2
    CH4 had to be produced and I got the right reactants but not the right moles, but I'm not sure why water is produced instead of oxygen. Both reactions make sense to me
    Considering all of the H2 and CH4 flying around, what is the chance that O2 would form? Given O2's love of reacting with things like H2 and CH4.

    If you weren't told what the products were and/or if the specification doesn't include reactions like this, then you might get away with producing O2.
 
 
 
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