Organic Chemistry Some Basic Principles and Techniques - Result Question 50

####56. Nitrogen detection in an organic compound is carried out by Lassaigne’s test. The blue colour formed corresponds to which of the following formulae?

[NEET Kar. 2013]

(a) $Fe_3[Fe(CN)_6]_3$

(b) $Fe_3[Fe(CN)_6]_2$

(c) $Fe_4[Fe(CN)_6]_3$

(d) $Fe_4[Fe(CN)_6]_2$

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Solution:

  1. (c) The prussian blue colour is of $Fe_4[Fe(CN)_6]_3$ ferric ferrocyanide


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