1.

The complex(es) which is /are bluein colour

Answer»

`Fe_(4)[FE(CN)_(6)]_(3)`
`Zn_(2)[Fe(CN)_(6)]`
`Cu_(2)[Fe(CN)_(6)]`
`Fe_(3)[Fe(CN)_(6)]_(2)`

Solution :(a) `Fe_(4)[Fe(CN)_(6)]_(3)`-Ferric FERROCYANIDE-(Prussian blue)
(b) `Zn_(2)[Fe(CN)_(6)]`,-Zinc ferrocyanide-(Blueish white PPT)
c) `Cu_(2)[Fe(CN)_(6)]`- Copper ferrocyanide -(Chocolate brown ppt)
d) `Fe_(3)[Fe(CN)_(6)]_(2)`- Ferroferric CYANIDE- (Tumbull.s blue)


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