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प्रश्न
How is phenol (carbolic acid) prepared from aniline (diazotization)?
थोडक्यात उत्तर
उत्तर
Aniline is treated with nitrous acid [NaNO2 + HCl] at low temperature to obtain benzene diazonium chloride, which on hydrolysis gives phenol. This reaction is called diazotization. An aqueous solution of benzene diazonium chloride on warming with water or dil. H2SO4 gives phenol.
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