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JEE Main202529 Jan 2025Morning ShiftChemistryChemical KineticsActual

The reaction ( A ₂+ B ₂ 2 AB ) follows the mechanism The overall order of the reaction is :

Options

  1. A2
  2. B2.5
  3. C3
  4. D1.5

Correct answer

D. 1.5

Step-by-step solution

aligned & rate = k ₂[ ~A ] [ B ₂ ] & ( k ₁ k _ -1 )= ( [ A ]^2 [ ~A ₂ ] ) & [ A ]= k ₁ k _ -1 [ ~A ₂ ] aligned Substituting in (1) ; we get aligned & Rate = k ₂ k ₁ k _ -1 [ ~A ₂ ]^ 1 2 [ ~B ₂ ] & order = ( 3 2 )=1.5 aligned

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