You visited us 1 times! Enjoying our articles? Unlock Full Access!

Formation of Complexes

Light green s...

Question

Light green solution of (A) does not give blue coloured ppt with $K_{4} [{F e (C N)}_{6}]$ but on adding a drop of ${H N O}_{3}$ , blue ppt. of (B) appears. However, (A) gives blue colour (C) with $K_{3} [{F e (C N)}_{6}]$ . Identify (A) if it, also gives white ppt with $A g {N O}_{3}$ solution?

{F e C l}_{2}

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

{F e I}_{2}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

{F e B r}_{2}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

None of the above

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A ${F e C l}_{2}$
The light green solution of (A) is due to presence of $F e C l_{2}$ .
It reacts with $K_{4} [{F e (C N)}_{6}]$ to form white precipitate.

$2 F e C l_{2} + K_{4} [{F e (C N)}_{6}] \to F e_{2} [F e (C N)_{6}] white precipitate + 4 K C l$

$H N O_{3}$ oxidizes ${F e}_{2} [{F e (C N)}_{6}]$ to ${F e}_{4} {[{F e (C N)}_{6}]}_{3}$ .

The colour of the precipitate changes from white to blue.

$F e C l_{2}$ reacts with $A g N O_{3}$ to form white precipitate of $A g C l$ .

$F e C l_{2} + 2 A g N O_{3} \to F e (N O_{3})_{2} + A g C l white precipitate$

Suggest Corrections

Similar questions

H_{2} S

B a {C l}_{2}

H C l

K_{4} [{F e (C N)}_{6}]

{F e C l}_{3}

{F e C l}_{2}

F e_{4} [F e (C N_{6})]_{3}

H_{2} S

N H_{4} C l

A g N O_{3}

A l B r_{3}

{F e}^{2 +}

K_{4} [{F e (C N)}_{6}]

F e^{2 +}

K_{4} [F e (C N)_{6}]

{F e}^{2 +}

K_{3} [{F e (C N)}_{6}]

{F e}^{3 +}

K_{4} [{F e (C N)}_{6}]

Join BYJU'S Learning Program