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  • In many reactions,the reaction proceeds in a sequence of steps,so the overall rate is determined byOption: 1 Order of different steps<

In many reactions,the reaction proceeds in a sequence of steps,so the overall rate is determined by

Option: 1

Order of different steps


Option: 2

slowest step


Option: 3

molecularity of the steps


Option: 4

fastest step


Answers (1)

best_answer

As we learnt 

 

Rate Determining Step -

 

The overall rate of reaction is controlled by the slowest step in a reaction called the rate determining step.

- wherein

e.g.

2H_{2}O_{2}\xrightarrow[alkaline\ medium]{I^{-}}2H_{2}O+O_{2}

r=\frac{-d[H_{2}O_{2}]}{dt}=K[H_{2}O_{2}][I^{-}]

H_{2}O_{2}+I^{-}\underset{slow}{\rightarrow}H_{2}O+IO

H_{2}O_{2}+IO^{-}\underset{fast}{\rightarrow}H_{2}O+I+O_{2}^{-}

 

 

 

 

Posted by

Sayak

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