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Indicate the reactions which take place at cathode and anode in fuel cell

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asked Dec 11, 2017 in Chemistry by sforrest072 (157,439 points) ● 61 ● 410 ● 938

 Indicate the reactions which take place at cathode and anode in fuel cell

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answered Dec 11, 2017 by mdsamim (213,225 points) ● 5 ● 10 ● 15
selected Dec 11, 2017 by sforrest072
 
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At cathode : O2 (g) + 2H2 O + 4e- => 4OH- (aq) 

At anode : 2H2 (g) + 4OH- (aq) => 4H2 O + 4e

The overall reaction is : 2H2 (g) + O2 (g) => 4H2 O (l)

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