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Explain the reason for the fusion of an ...

Explain the reason for the fusion of an organic compound with metallic sodium for testing nitrogen sulphur and halogen.

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The organic compound is fused with sodium metal to convert these elements (N, S or halogens) present in the covalent compound to ionic form.
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Explain the rason for the fusion of an organic compound with metallic sodium for testing nitrogen, sulphur and halogens

Organic compound is fused with metallic sodium for testing nitrogen,sulphur and halogens because

I. Read the following passage and answer questions 1 - 5 that follow: Nitrogen, sulphur and halogens in an organic compound are detected by Lassaigne's test in which the organic compound is fused with sodium metal. During fusion N is converted to NaCN, S to Na_2 S and halogens to sodium halides. Why is an organic compound fused with metallic sodium for testing N, S and halogens?

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