Compound A has a melting point of 177-179 C. It is thought to be one of the foll

Question

Compound A has a melting point of 177-179 C. It is thought to be one of the following compounds: 5-aminoindazole (178-179 C), 2-aminophenol (171-173 C), N-benzoylglycine (177-179 C), or thiourea (177-178 C). Mixed melting points with each of these four compounds gives the following results: with 5-aminoindazole = 166 - 170 C, with 2-aminophenol = 170-178 C, with N-benzoylglycine (174-180 C), and with thiourea = 178-180 C. Which compound is compound A? 5-aminoindazole 2-aminophenol N-benzoylglycine thiourea

Explanation / Answer

The compound is thiourea. When the compound is mixed with thiourea , the melting point does not change much. whereas when it is mixed with other substances, melting point will change significantly.

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