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In the test of nitrogen the Prussian blue color formed is of:
- a)Nitrogen
- b)Sodium thiocyanate
- c)Ammonium molybdate
- d)Ferriferrocyanide
Correct answer is option 'D'. Can you explain this answer?
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In the test of nitrogen the Prussian blue color formed is of:a)Nitroge...
The correct answer is Option D.
In the Lassaigne's test for the detection of nitrogen in an organic compound, the appearance of a blue coloured compound is due to ferric ferrocyanide.
In this test, sodium fusion extract is boiled with ferrous sulphate and then acidified with conc. sulphuric acid. Prussian blue colour complex ferric ferrocyanide confirms the presence of nitrogen.
FeSO4+2NaOH→Fe(OH)2+Na2SO4
6NaCN+Fe(OH)2→Na4Fe(CN)6+2NaOH
3NaFe(CN)6+4FeCl3→Fe4[Fe(CN)6]3+12NaCl
In the Lassaigne's test for the detection of nitrogen in an organic compound, the appearance of a blue coloured compound is due to ferric ferrocyanide.
In this test, sodium fusion extract is boiled with ferrous sulphate and then acidified with conc. sulphuric acid. Prussian blue colour complex ferric ferrocyanide confirms the presence of nitrogen.
FeSO4+2NaOH→Fe(OH)2+Na2SO4
6NaCN+Fe(OH)2→Na4Fe(CN)6+2NaOH
3NaFe(CN)6+4FeCl3→Fe4[Fe(CN)6]3+12NaCl
It is ferric ferrocyanide.
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In the test of nitrogen the Prussian blue color formed is of:a)Nitrogenb)Sodium thiocyanatec)Ammonium molybdated)FerriferrocyanideCorrect answer is option 'D'. Can you explain this answer?
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