Nitrogen detection in an organic compound is carried out by Lassaigne's test. The blue colour formed

Question

Nitrogen detection in an organic compound is carried out by Lassaigne's test. The blue colour formed corresponds to which of the following formulae?\

Professor PC Thomas Classes · Answer

(b) : $3 \mathrm{Na}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]+2 \mathrm{Fe}_{2}\left(\mathrm{SO}_{4}\right)_{3} \rightarrow \mathrm{Fe}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{3}+6 \mathrm{Na}_{2} \mathrm{SO}_{4}$ Sodium ferrocyanide Ferric ferrocyanide (Prussian blue)