JIPMER2015ChemistryChemical Kinetics
A hypothetical reaction, X₂+Y₂ 2 X Y follows the following mechanism X₂ X+X . . . . . . . fast X+Y₂ X Y+Y slow X+Y X Y .......... fast The order of the overall reaction is
Options
- A2
- B3 / 2
- C1
- D0
Correct answer
B. 3 / 2
Step-by-step solution
Rate =k[X] [Y₂ ] But, k= [X]^2 [X₂ ] or, [X]= k [X₂ ] Rate =k k [X₂ ] [Y₂ ]=k^ [X₂ ]^ 1 / 2 [Y₂ ] Thus, order, =1+ 1 2 = 3 2