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Home/chapter 9

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Ganpati
Ganpati
Asked: February 20, 2024In: Class 12 Chemistry

How do diazonium salts serve as intermediates for introducing various substituents (-F, -Cl, -Br, -I, -CN, -OH, -NO₂) into the aromatic ring?

Diazonium salts are versatile intermediates for introducing substituents like -F, -Cl, -Br, -I, -CN, -OH, -NO₂ into the aromatic ring through electrophilic substitution reactions, enabling the synthesis of substituted aromatic compounds that may not be directly prepared by other methods.

chapter 9chemistryclass 12
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Ganpati
Ganpati
Asked: February 20, 2024In: Class 12 Chemistry

Describe the products obtained and the type of reaction in coupling reactions involving diazonium salts and phenol or aniline.

Coupling reactions involve the reaction of benzene diazonium chloride with phenol or aniline, leading to the formation of azo products like p-hydroxyazobenzene or p-aminoazobenzene. These reactions are examples of electrophilic substitution.

chapter 9chemistryclass 12
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Ganpati
Ganpati
Asked: February 20, 2024In: Class 12 Chemistry

Explain the significance of coupling reactions involving diazonium salts and phenol or aniline.

Coupling reactions involving benzene diazonium chloride with phenol or aniline result in the formation of azo products, such as p-hydroxyazobenzene and p-aminoazobenzene, respectively. These compounds, with extended conjugate systems, are often colored and utilized as dyes.

chapter 9chemistryclass 12
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Ganpati
Ganpati
Asked: February 20, 2024In: Class 12 Chemistry

Describe the reaction conditions and products formed when diazonium fluoroborate is heated with aqueous sodium nitrite in the presence of copper.

When diazonium fluoroborate is heated with aqueous sodium nitrite in the presence of copper, the diazonium group is replaced by a -NO₂ group.

chapter 9chemistryclass 12
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Ganpati
Ganpati
Asked: February 20, 2024In: Class 12 Chemistry

Under what conditions does hydrolysis of a diazonium salt occur, and what is the resulting product?

Hydrolysis of a diazonium salt occurs when the temperature of the solution rises to 283 K, leading to the formation of phenol.

chapter 9chemistryclass 12
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