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प्रश्न
Write chemical reactions for the following named organic reaction:
Diazotisation reaction
रासायनिक समीकरण/संरचनाएँ
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उत्तर
In a Diazotisation reaction, a primary aromatic amine (like aniline) reacts with nitrous acid (HNO2) at low temperature (0 - 5°C) to form a benzene diazonium salt.
Since nitrous acid is unstable, it is prepared in situ by reacting sodium nitrite (NaNO2) with hydrochloric acid (HCl).
\[\ce{\underset{Aniline}{C6H5NH2} + NaNO2 + 2HCl ->[273 - 278 K] \underset{chloride}{\underset{Benzenediazonium}{C6H5\overset{+}{N2}\overset{-}{C}l}} + NaCl + 2H2O}\]
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