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The compound formed in the positive test for nitrogen with the Lassaigne solution of an organic compound is a. Fe base 4[Fe(CN) base 6] base 3 b. Na base 3[Fe(CN) base 6]

The compound formed in the positive test for nitrogen with the Lassaigne solution of an organic compound is
a. Fe base 4[Fe(CN) base 6] base 3
b. Na base 3[Fe(CN) base 6]

Grade:6

2 Answers

Apoorva Arora IIT Roorkee
askIITians Faculty 181 Points
7 years ago
When we do the lassaigne test for nitrogen, The following reactions take place:

Detection of nitrogen in Lassaigne's test
So the Prussian blue color of the solution is due to Ferric ferro cyanide i.e. Option A from the question.


Thanks and Regards
Apoorva Arora
IIT Roorkee
askIITians Faculty
Arun Kumar IIT Delhi
askIITians Faculty 256 Points
7 years ago
Hi
Actually both are formed but b is reacted with FeCl3 to form a which is prussian blue.

Detection of nitrogen in Lassaigne's test


Thanks & Regards, Arun Kumar, Btech,IIT Delhi, Askiitians Faculty

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