The overall reaction of a hydrogen-oxygen fuel cell is:
$2 H_{2 (g)} + O_{2 (g)} \to 2 H_{2} O_{(l)}$
$2 H_{2 (g)} + 4 O H_{(a q)}^{-} \to 4 H_{2} O_{(l)} + 4 e^{-}$
$O_{2 (g)} + 2 H_{2} O_{(l)} + 4 e^{-} \to 4 O H_{(a q)}^{-}$
$4 O H_{(a q)}^{-} + 4 e^{-} \to 2 H_{2} O_{(l)}$

Question

The overall reaction of a hydrogen-oxygen fuel cell is-2H-2-g-O-2-g-rightarrow 2H-2O-l-2H-2-g-4OH-aq-rightarrow 4H-2O-l-4e-O-2-g-2H-2O-l-4e-rightarrow 4OH-aq-4OH-aq-4e-rightarrow 2H-2O-l-

Toppr Admin · Accepted Answer

A-xA0-fuel cell-xA0-is an-xA0-electrochemical cell-xA0-that converts the-xA0-chemical energy-xA0-from a fuel into electricity through an-xA0-electrochemical-xA0-reaction of-xA0-hydrogen fuelwith oxygen or anotheroxidizing agent-The reactions which takes place in hydrogen-oxygen fuel cell are-At cathode-2H2-g-4OH-x2212-aq-x2192-4H2O-l-4e-x2212-At cathode-O2-g-2H2O-l-4e-x2212-x2192-4OH-x2212-aq-Overall reaction- 2H2-g-O2-g-x2192-2H2O-l-

The overall reaction of a hydrogen-oxygen fuel cell is:2H2(g)+O2(g)→2H2O(l)2H2(g)+4OH−(aq)→4H2O(l)+4e−O2(g)+2H2O(l)+4e−→4OH−(aq)4OH−(aq)+4e−→2H2O(l)

The overall reaction of a hydrogen-oxygen fuel cell is:
$2 H_{2 (g)} + O_{2 (g)} \to 2 H_{2} O_{(l)}$
$2 H_{2 (g)} + 4 O H_{(a q)}^{-} \to 4 H_{2} O_{(l)} + 4 e^{-}$
$O_{2 (g)} + 2 H_{2} O_{(l)} + 4 e^{-} \to 4 O H_{(a q)}^{-}$
$4 O H_{(a q)}^{-} + 4 e^{-} \to 2 H_{2} O_{(l)}$