The following mechanism has been proposed for the reaction of NO with $Br_{2}$ to form NOBr :
NO(g) + Br₂(g) $⇌$ NOBr₂(g)
NOBr₂(g) + NO(g) $⟶$ 2NOBr(g)
If the second step is the rate-determining step, the order of the reaction with respect to NO(g) is

Question

The following mechanism has been proposed for the reaction of NO with $Br_{2}$ to form NOBr :

NO(g) + Br₂(g) $⇌$ NOBr₂(g)

NOBr₂(g) + NO(g) $⟶$ 2NOBr(g)

If the second step is the rate-determining step, the order of the reaction with respect to NO(g) is

TestHub · Accepted Answer

r = k [ NOB r 2 ​ ] [ NO ] k e q ​ = k 2 ​ k 1 ​ ​ = [ NO ] [ B r 2 ​ ] [ NOB r 2 ​ ] ​ [ NOB r 2 ​ ] = k 2 ​ k 1 ​ ​ [ NO ] [ B r 2 ​ ] r = k 2 ​ k k 1 ​ ​ [ NO ] [ B r 2 ​ ] [ NO ] = k ′ [ NO ] 2 [ B r 2 ​ ]

Chemistry - Chemical Kinetics Question with Solution | TestHub

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JEE Main 2027 (Class 12)