Question

Diazonium salt decomposes as
C₆H₅N₂⁺Cl⁻ → C₆H₅Cl + N₂
At 0°C, the evolution of N₂ becomes two times faster when
the initial concentration of the salt is doubled. Therefore, it
is
(a) a first order reaction
(b) a second order reaction
(c) independent of the initial concentration of the salt
(d) a zero order reaction

Answer 1

Answer:

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Answer 2

Order of Reaction is :

Reaction: C₆H₅N₂⁺Cl⁻ → C₆H₅Cl + N₂

• Given that the evolution of N₂ becomes two times faster when

the initial concentration of the salt is doubled.

• That means rate of reaction is directly proportional to the first power of concentration of reactant.

• That's why when we doubled concentration of reactant, rate also got faster by two times.

• We can write,

• R = k[C₆H₅N₂⁺Cl⁻]

• This is first order reaction.

• Hence, option a) is correct.