In $H_2-O_2$ fuel cell,the reaction occurring at the cathode is:
- A$2H_{2(g)} + O_{2(g)} \rightarrow 2H_2O_{(l)}$
- B$O_{2(g)} + 2H_2O_{(l)} + 4e^- \rightarrow 4OH^{-}_{(aq)}$
- C$H^{+} + e^- \rightarrow \frac{1}{2}H_2$
- D$H^{+}_{(aq)} + OH^{-}_{(aq)} \rightarrow H_2O_{(l)}$
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