1.

K_(4)[Fe(CN)_(6)] is used in the identification of:

Answer»

`FE^(2+)` ions
`Fe^(3+)` ions
`Cu^(2+)` ions
`Cd^(2+)` ions

Solution :`4Fe^(3+)+3K_(4)[Fe(CN)_(6)]TOFE[Fe(CN)_(6)]_(3)+12K^(+)` preussion blue `Fe^(2+)underset(Delta)toFe^(3+)overset(K_(4)[Fe(CN)_(6)])to` Prussion blue
`2Cu^(2+)+K_(4)[Fe(CN)_(6)]toCu_(2)[Fe(CN)_(6)]darr+` reddish BROWN `2K_(2)SO_(4)`


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