1.

Which of the following reaction shows metal corrosion reaction in presence of H_(3)O^(+) ?

Answer»

`2H_(2)O_((l)) to O_(2(g)) +4H_((aq))^(+)+4e^(-)`
`2H_(2)O_((l))+2e^(-) to H_(2(g))+2OH_((aq))^(-)`
`O_(2(g))+4H_((aq))^(+)+4e^(-) to 2H_(2)O_((l))`
`O_(2(g))+2H_(2)O_((l))+4e^(-) to 4OH_((aq))^(-)`

Solution :REDUCTION REACTION is carried out on cathode. Only reaction of (C) SHOWS reduction reaction in presence of `H^(+)(H_(3)O^(+))`.


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