What is the composition of Lassaigne's extract if the organic compound contain Nitrogen? How presence of Nitrogen detected?
If the organic compound contains nitrogen as foreign element the sodium extract must have the following composition:
Na + C + N-------------------------> NaCN
(sodium cyanide)
Detection of Nitrogen by Lassaigne's extract:
After the preparation of the lassaigne's solution is made alkaline by adding few drops of dilute of sodium hydroxide solution if the lassaigne's solution is not alkaline. A small amount of freshly prepared ferrous sulphate solution is added which yields...