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Question

Which one of the following gives Prussion blue colour?
  1. Na4[Fe(CN)6]
  2. Fe3[Fe(CN)6]3
  3. Fe2[Fe(CN)6]
  4. Fe4[Fe(CN)6]3

A
Na4[Fe(CN)6]
B
Fe2[Fe(CN)6]
C
Fe4[Fe(CN)6]3
D
Fe3[Fe(CN)6]3
Solution
Verified by Toppr

Prussian blue is described as a deep blue pigment that is produced when the oxidation of ferrous ferrocyanide salts occurs.

It contains ferric hexacyanoferrate(II) Fe4[Fe(CN)6]3 in a cubic lattice crystal structure.

4FeCl3+3K4[Fe(CN)6]Fe4[Fe(CN)6]3+12KCl

So, the correct option is D.

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Similar Questions
Q1

In the Lassaigne’s test for nitrogen in an organic compound, the Prussian blue colour is obtained due to the formation of:

(a) Na4[Fe(CN)6] (b) Fe4[Fe(CN)6]3 (c) Fe2[Fe(CN)6] (d) Fe3[Fe(CN)6]4

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Q2
Fe2+ gives blue colour, called Turnbull's blue with K3[Fe(CN)6] While Fe3+ gives blue colour, called Prussian blue with K4[Fe(CN)6]

If the given statement is true enter 1 else enter 0.
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Q3
Colour of Fe4[Fe(CN)6]3 is
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Q4
On the basis of following E values, the strongest oxidising agent is:
[Fe(CN)4]4[Fe(CN)6]3+e
E=0.35 VFe2+Fe3++eE=0.77 V
View Solution
Q5
On the basis of the following Eo values, the strongest oxidising agent is:
[Fe(CN)6]4[Fe(CN)6]3++e,Eo=0.35V
Fe2+Fe3++e1;
Fe2+Fe3++e1;Eo=0.77V
View Solution