diazotization

Question

Diazotization of aniline produces:

RankGuru · Accepted Answer

**Diazotization** is the reaction of a primary aromatic amine with nitrous acid ($HNO_2$).
- Reagents: $NaNO_2$ and $HCl$ at **$0-5^\circ C$**. 
- Reaction: $C_6H_5NH_2 + NaNO_2 + 2HCl 	o C_6H_5N_2^+Cl^- + NaCl + 2H_2O$
- Product: **Benzenediazonium chloride**. 
- The low temperature is critical because diazonium salts are thermally unstable and decompose above $5^\circ C$ to release $N_2$ gas. These salts are important intermediates for Sandmeyer, Gatterman, and Coupling reactions.

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More diazotization Practice Questions

Diazotization of aniline performed at low temperature (~0–5°C) because: