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Question

How to obtain orange-red dye from Benzene diazonium chloride?


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Solution

Obtaining orange-red dye from Benzene diazonium chloride

  • Benzenediazonium chloride is a colorless solid.
  • The reaction of Benzene diazonium chloride with Resorcinol in a basic medium is a coupling reaction.
  • When Benzene diazonium chloride reacts with Resorcinol, p-hydroxyazobenzene is obtained.
  • p-hydroxyazobenzene is nothing but orange dye.

Hence, Benzene diazonium chloride forms an orange-red dye with Resorcinol.


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