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Mechanism of a hypothetical reaction X...

Mechanism of a hypothetical reaction
`X_(2) + Y_(2) rarr 2XY` is given below:
(i) `X_(2) rarr X + X` (fast)
(ii) `X+Y_(2) hArr XY+Y` (slow)
(iii) `X + Y rarr XY` (fast)
The overall order of the reaction will be :

A

1.5

B

1

C

2

D

0

Text Solution

Verified by Experts

The correct Answer is:
A
In the slowest step.
`X + Y_(2) hArr XY + Y`
half molecules of `Y_2` reacts with the one molecule of X.
`therefore 1 + 0.5 = 1.5`
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