For a hypothetical reaction A k 1 ⇌ k 1 B k 2 slow C assuming rate of formation of B is equal to its rate of disappearance, the rate expression is:

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For a hypothetical reaction A k 1 ​ ⇌ k 1 ​ ​ ​ B k 2 ​ slow ​ C assuming rate of formation of B is equal to its rate of disappearance, the rate expression is:

TestHub · Accepted Answer

r a t e = k 2 ​ [ B ] … ( 1 ) d t d [ B ] ​ = k 1 ​ [ A ] − k − 1 ​ [ B ] − k 2 ​ [ B ] = k 1 ​ [ A ] − B ] [ k − 1 ​ − k 2 ​ ] but d t d [ B ] ​ = 0 [ B ] = k − 1 ​ + k 2 ​ k 1 ​ [ A ] ​ .. ( 2 ) ∴ (2) in (1) r a t e = k − 1 ​ + k 2 ​ k 1 ​ k 2 ​ [ A ] ​

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