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There Are Many Fuel Cell Systems, but One of the More

Question 3

Multiple Choice

There are many fuel cell systems, but one of the more commonly studied is the Hydrogen/Oxygen fuel-cell, the two half reactions of which are shown below.
Reaction A 2 H2 + 4 OH- -----> 4 H2O + 4 e-
Reaction B O2 + 2 H2O + 4 e- -----> 4 OH -
Which reaction takes place at the cathode?


A) Reaction A
B) Reaction B
C) the reverse of Reaction A
D) the reverse of Reaction B
E) All of the above

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