The ____ reactions in a hydrogen fuel cell can be described as a ____ reactions. At the ____ or negative electrode, hydrogen loses electrons and so is oxidised. The half equation for this reaction is H2 (g) --> 2H^+(aq) ____  2e^- At the anode or ____ electrode, oxygen is reduced. The halft equation for this reaction is:  4H+ (aq)  +  O2 (g) +  4e^-  -->   2H20 ____

Fuel cells

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