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Describe the reactions involved in the d...

Describe the reactions involved in the detection of nitrogen in an organic compound by Lassaigne method.

Text Solution

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`Na +ubrace(C+N)to NaCN`
from organic compounds
`underset(("from excess of sodium"))(FeSO_(4)+2NaOH to Fe (OH)_(2)+Na_(2)SO_(2))`
`6NaCN + fe (OH)_(2)to underset("Sod.ferroeyanide")(Na_(4)[Fe(CN)_(6)])+2NaOH`
`3Na_(4)[Fe(CN)_(6)]+4FeCl_(3)underset("ferric ferrocyanide prussian blue or green ppt")(toFe_(4)[Fe(CN)_(6)]_(3)+)12NACl`
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