The reaction obey I order with respect to `H_(2)` and `ICl` both. `H_(2) (g) + 2ICl(g) rarr 2 HCl(g) + I_(2) (g)` Which of the following mechanism is in consistent with the given fact ? Mechanism A: `H_(2) (g) + 2Cl rarr 2HCl(g) + I_(2)(g)` Mechanism B: (i) `H_(2)(g) + ICl(g) overset ("slow")rarr HCl(g) + HI(g)` (ii) `HI(g) + ICl(g) rarr HCl(g) + I_(2)`A. only BB. Both A and BC. Neither A nor BD. Only A

The reaction obey I order with respect to `H_(2)` and `ICl` both. `H_(

1.	The reaction obey I order with respect to `H_(2)` and `ICl` both. `H_(2) (g) + 2ICl(g) rarr 2 HCl(g) + I_(2) (g)` Which of the following mechanism is in consistent with the given fact ? Mechanism A: `H_(2) (g) + 2Cl rarr 2HCl(g) + I_(2)(g)` Mechanism B: (i) `H_(2)(g) + ICl(g) overset ("slow")rarr HCl(g) + HI(g)` (ii) `HI(g) + ICl(g) rarr HCl(g) + I_(2)`A. only BB. Both A and BC. Neither A nor BD. Only A
Answer» Correct Answer - A in the reactions which take place in a number of steps , the slowest step is know as the rate determining step hence , rate reaction always depends on slow step . `H_(2)(g) +[C](g) to HCI(g)+HI(g)`is first order reaction with respect to `H_(2) and ICI` thus the mecheaniusm B will be more consistent with the given informataion .

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