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Batteries

Exercise 5

          

Given the fuel cell: H2/H+ and O2/H2O The hydrogen is oxidised. The oxygen O2 is reduced to H2O Write the equations of the reactions at the electrodes!

A natural reaction takes place between the strongest reducing agent H2 and the strongest oxidising agent O2: O2+4e-+4H+4H2O H2-2e-2H+