What is the fundamental principle of the Lass | vedclass

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(A) The Lassaigne test is used for the detection of nitrogen,sulfur,and halogens in organic compounds. Since these elements are covalently bonded in o

Vedclass · Accepted Answer

To convert the elements present in the compound from covalent to ionic form.

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(A) The Lassaigne test is used for the detection of nitrogen,sulfur,and halogens in organic compounds. Since these elements are covalently bonded in organic compounds,they cannot be detected directly by standard precipitation reactions. Therefore,the fundamental principle of the Lassaigne test is to fuse the organic compound with metallic sodium $(Na)$. This process converts the covalently bonded elements into their corresponding water-soluble ionic salts (e.g.,$NaCN$,$Na_2S$,$NaCl$),which can then be easily identified using standard chemical reagents.

Column $-I$	Column $-II$
$(i).$ Lassaigne's test	$(a).$ By sodium peroxide
$(ii).$ Test for nitrogen	$(b).$ Acidify with acetic acid
$(iii).$ Test for sulphur	$(c).$ Acidify with conc. sulphuric acid
$(iv).$ Test for phosphorus	$(d).$ Fusion with sodium

What is the fundamental principle of the Lassaigne test?

Similar Questions

During the fusion of an organic compound with sodium metal,the nitrogen present in the organic compound is converted into:

During Lassaigne's test,if $N$ and $S$ are present individually in an organic compound,they are converted into:

Which of the following substances will give the Lassaigne's test for nitrogen?

Discuss the chemistry of Lassaigne's test.

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