1.

In H_2-O_2 fuel cell the reaction occurring at cathode is

Answer»

`H_((aq))^(+) + OH_((aq)) to H_2O_((l))`
`H + e^(-)to 1//2 H_2`
`O_(2(g)) + 2H_2O_((l)) + 4e^(-) to 4OH_((aq))`
`2H_(2(l)) + O_(2(g)) to 2H_2O_((l))`

SOLUTION :At anode , `2H_2(g) + 4OH^(-) (aq) to 4H_2O (l) +2e^(-)`
At cathode : `O_2(g) + 2H_2O (l) + 4e^(-) to 4OH^(-) (aq)`
OVERALL REACTION : `2H_2(g) + O_2(g) to 2H_2O (l)`


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