Vasantha Kumari
Last Activity: 11 Years ago
Sodium cyanide is an organic compound composed of sodium, carbon and
nitrogen.
Na + C + N ® NaCN
When sodium cyanide reacts with Fe3+
ions they react with sodium ferrocyanide giving Prussian blue or green colour
due to the formation of ferric ferrocyanide
2NaCN + FeSO4 ¾® Na2 SO4+ Fe(CN)2
Fe(CN)2 +
4NaCN ¾® Na4 [Fe(CN)6]
Sodium
ferrocyanide
3Na4[Fe(CN)6]+
4Fe3+ ¾® Fe4 [Fe(CN)6]3
+ 12Na+
Ferric
ferrocyanide
(Prussian
blue)
Thanks & Regards,
Vasantha Sivaraj,
askIITians faculty.