Which of the following diazonium salt is relatively stable at $0 - 5^{\circ}$ C?

C H_{3} - N \equiv N^{\oplus} C l^{-}

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C H_{3} C H (C H_{3}) - N \equiv N^{\oplus} C l^{-}

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C_{6} H_{5} - N \equiv N^{\oplus} C l^{-}

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{(C H_{3})}_{3} C - N \equiv N^{\oplus} C l^{-}

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Solution

The correct option is C $C_{6} H_{5} - N \equiv N^{\oplus} C l^{-}$
Diazonium salts obtained from aliphatic primary amines are unstable. Those obtained from aromatic primary amines are relatively stable.
Benzene diazonium chloride $(C_{6} H_{5} - N \equiv N^{\oplus} C l^{-})$ is obtained from aromatic primary amine. Hence, it is relatively stable.

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Q. Diazonium salt decomposes as,

C_{6} H_{5} N_{2}^{+} {C l}^{-} ⟶ C_{6} H_{5} C l + N_{2}

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Which of the following diazonium salt is relatively stable at 0−5∘C?

Which of the following diazonium salt is relatively stable at $0 - 5^{\circ}$ C?