In the detection test of nitrogen,the Prussia | vedclass

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Question

(A) In the Lassaigne's test for nitrogen,the sodium fusion extract containing sodium cyanide $(NaCN)$ is treated with ferrous sulphate $(FeSO_{4})$. T

Vedclass · Accepted Answer

$Fe_{4}[Fe(CN)_{6}]_{3}$

Vedclass · Answer

(A) In the Lassaigne's test for nitrogen,the sodium fusion extract containing sodium cyanide $(NaCN)$ is treated with ferrous sulphate $(FeSO_{4})$. This leads to the formation of sodium ferrocyanide,$Na_{4}[Fe(CN)_{6}]$. On further reaction with ferric chloride $(FeCl_{3})$,it forms ferric ferrocyanide,which is known as Prussian blue. The chemical formula is $Fe_{4}[Fe(CN)_{6}]_{3} \cdot x H_{2}O$. This compound is chemically known as Iron$(III)$ hexacyanoferrate$(II)$.

In the detection test of nitrogen,the Prussian blue colour is due to which compound?

Similar Questions

Explain the reason for the fusion of an organic compound with metallic sodium for testing nitrogen,sulphur,and halogens.

What happens when an organic compound is fused with sodium metal?

In the test for halogens,why is nitric acid added to the sodium fusion extract before adding silver nitrate?

The volume of nitrogen is measured by which apparatus in the Dumas method?

Give the chemical reaction for the detection of nitrogen in an organic compound using the Lassaigne's test.

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