Given below are two statements:
Statement I: Primary aliphatic amines react with $HNO_2$ to give unstable diaz

Question

Given below are two statements:
Statement I: Primary aliphatic amines react with $HNO_2$ to give unstable diazonium salts.
Statement II: Primary aromatic amines react with $HNO_2$ to form diazonium salts which are stable even above $300	ext{ K}$.
In the light of the above statements, choose the most appropriate answer from the options given below:

Accepted Answer

1. **Statement I (Correct):** Primary aliphatic amines react with nitrous acid ($HNO_2$) to form alkyl diazonium salts. These salts are highly unstable and immediately decompose to yield primary alcohols and nitrogen gas.
2. **Statement II (Incorrect):** Primary aromatic amines react with $HNO_2$ to form aryl diazonium salts. These salts are relatively stable only at low temperatures, strictly between $273	ext{ K}$ to $278	ext{ K}$ ($0^\circ	ext{C}$ to $5^\circ	ext{C}$). They are unstable and decompose when the temperature is raised, so they are not stable above $300	ext{ K}$.
3. **Conclusion:** Therefore, Statement I is correct, and Statement II is incorrect.

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