Question

Metal used to detect nitrogen in organic compound

Answer 1

Answer:

• It is a general test for the detection of halogens, nitrogen and sulphur in an organic compound.
• These elements are covalently bonded to the organic compounds.
• In order to detect them, these have to be converted into their ionic forms.
• This is done by fusing the organic compound with sodium metal.

Answer 2

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Here is your answer

$\huge{\textbf{\underline{Detection\:of\:nitrogen}}}$

☞The sodium fusion extract is boiled with FeSO4 and then acidified with concentrated sulfuric acid

☞The formation of Prussian blue colour confirms the presence of nitrogen

☞The Prussian blue colour obtained in lassaigne's test is due to the formation of ferric ferro cyanide

$\bold{6NaCN+FeSO_4{\rightarrow}Na_4[Fe(CN)_6]+Na_2SO_4}}}$

$\bold{3Na_4[Fe(CN)_6]+4FeCl_3{\rightarrow}Fe_4[Fe(CN)_6]_3+12NaCl}}$