In H2-O2 fuel cell, the reaction occurring at cathode, is

Question

In H2-O2 fuel cell, the reaction occurring at cathode, is (A)  2H2+O2 xrightarrow2H2O(l)  (B)  H++OH- xrightarrowH2O  (C)  O2+2H2O+4e- xrightarrow4OH-  (D)  H++e- xrightarrow(1/2)H2

Tardigrade Admin · Accepted Answer

In hydrogen-oxygen fuel cell, the following reaction occurs at cathode, O2+2H2O+4e- xrightarrow4OH-

Q. In $H_{2} - O_{2}$ fuel cell, the reaction occurring at cathode, is

$2 H_{2} + O_{2} 2 H_{2} O (l)$

$H^{+} + O H^{-} H_{2} O$

$O_{2} + 2 H_{2} O + 4 e^{-} 4 O H^{-}$

$H^{+} + e^{-} \frac{1}{2} H_{2}$

In hydrogen-oxygen fuel cell, the following reaction occurs at cathode, $O_{2} + 2 H_{2} O + 4 e^{-} 4 O H^{-}$

Q. In H2​−O2​ fuel cell, the reaction occurring at cathode, is

2H2​+O2​​2H2​O(l)

H++OH−​H2​O

O2​+2H2​O+4e−​4OH−

H++e−​21​H2​