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QNEET-2017-Ch-921: NEET 2017 Chemistry - Class 12 NEET-2017-Ch-921 Solution: Mechanism of a hypothetical reaction \(X_2 + Y_2 2XY\) is given …
Mechanism of a hypothetical reaction is given below: (i) (fast) (ii) (slow) (iii) (fast) The overall order of the reaction will be 2 0 1.5 1
Multiple Choice Options
- A 2
- B 0
- C 1.5
- D 1
Step-by-Step Verified Solution
Slow step is the rate determining step.
Rate = k[X][Y 2 ] ......(i)
Equilibrium constant for fast step,
K = [ X ] 2 [ X 2 ]
_ [X] = K [ X 2 ]
By substituting [X] in equation (i), we get
Rate = k K [ X 2 ] [Y 2 ] = k' [ X 2 ] 1 2 [Y 2 ]
_ Order of reaction = 1 2 + 1 = 1.5