Which of the following nitrogen-containing co | vedclass

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(D) Lassaigne's test is used to detect nitrogen,sulfur,and halogens in organic compounds. It involves the fusion of the organic compound with sodium m

Vedclass · Accepted Answer

Hydrazine

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(D) Lassaigne's test is used to detect nitrogen,sulfur,and halogens in organic compounds. It involves the fusion of the organic compound with sodium metal,which converts the elements present into their corresponding sodium salts. For nitrogen,it forms sodium cyanide $(NaCN)$. Since $NaCN$ requires both carbon and nitrogen,the organic compound must contain both elements. Hydrazine $(NH_2-NH_2)$ contains nitrogen but lacks carbon,therefore it cannot form $NaCN$ and does not give a positive Lassaigne's test.

Which of the following nitrogen-containing compounds does not give Lassaigne's test?

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