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Potassium ferrocyanide is used in the de...

Potassium ferrocyanide is used in the detection of

A

`Cu^(2+)` ions

B

`Fe^(3+)` ions

C

both

D

none

Text Solution

Verified by Experts

Both `Cu^(2+)` and `Fe^(3+)` are detected with potassium ferrocyanide.
`2CuSO_(4)+K_(4)[Fe(CN)_(6)] to underset("Chocolate ppt.")(Cu_(2)[Fe(CN)_(6)]+2K_(2)SO_(4)`
`4FeCl_(3)+3K_(4)[Fe(CN)_(6)] to underset("(Prussian blue)")underset("ferriferro cyanide")(Fe_(4)[Fe(CN)_(6)])+12KCl`
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