1.

Which of the following species is reduced by N_(2)O_(2) ?

Answer»

`[Fe(CN)_(6)]^(4-)`
`[Fe(CN)_(6)]^(3-)` in alkaline SOLUTION
`NO_(2)^(-)`
`I^(-)//HCl`.

Solution :`|Fe(CN)_(6)|^(3-)` is reduced to `|Fe(CN)_(6)|^(4-)` in alkaline solution.
`2|Fe(CN)_(6)|^(3-)+2OH^(-)+H_(2)O_(2)to|Fe(CN)_(6)|^(4-)+2H_(2)O_(2)+O_(2)`.


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