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  4. Benzenediazonium chloride cannot be stored and is used immediately after its preparation because

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Q. Benzenediazonium chloride cannot be stored and is used immediately after its preparation because

Amines

Solution:

Benzene diazonium chloride cannot be stored and is used immediately after its preparation because it is very unstable with a slight high in temperature and dissociates to give nitrogen.
The diazonium reaction uses nitrous acid to convert phenylamine into the diazonium salt benzene diazonium chloride $\left( C _{6} H _{5} N _{2}^{+} Cl ^{-}\right)$. Nitrous acid decomposes very readily and so cannot be stored.
The temperature must be kept below $5^{0} C$ in an ice bath during diazotization otherwise the main product decomposes, losing its $N _{2}$ atoms as $N _{2}$ gas.